Group 3 - Homelite Fluid Pump (Gasoline Powered) - Product Explanation

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'''Tools Required:'''
 
'''Tools Required:'''
  
−
* t1
+
* Needle-Nose pliers
  
−
* 12
+
* Piston Ring Compressor
 +
 
 +
* ??? Socket
  
 
<!-- COL 3 (PROCEDURE) -->
 
<!-- COL 3 (PROCEDURE) -->
 
| Install the piston to the crankcase
 
| Install the piston to the crankcase
−
# s1
+
# Using piston ring compressor tool, insert the connecting rod through the cylinder hole and install the piston into the cylinder
−
# s2
+
 
 +
Assemble the connecting rod to the crankshaft
 +
 
 +
# Align the connecting rod (b arrow) and crankshaft (b arrow) as shown.
 +
# Plase the connecting rod cap (a arrow), bolt head locking tab (a arrow), oil slosher (a arrow) in that order in the configurations pictured
 +
# Install the two bolts (b arrow) in the corresponding holes in the connecting rod and tighten
 +
# Using needle-nose pliers, bend up the corners on the bolt head locking tab against the flats of the bolt heads
 
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| [[File:G3 reass 4a.png|thumb|center|upright=1.0]]
 
| [[File:G3 reass 4a.png|thumb|center|upright=1.0]]
 
a: 100_4179
 
a: 100_4179
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b: 100_4182
 
b: 100_4182
 
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'''Tools Required:'''
 
'''Tools Required:'''
  
−
* t1
+
* Hands Only
−
 
+
−
* 12
+
  
 
<!-- COL 3 (PROCEDURE) -->
 
<!-- COL 3 (PROCEDURE) -->
−
| pH1
+
|  
−
# s1
+
# Install each of (2) lifters (arrows) into their holes
−
# s2
+
# Install the end of the camshaft (arrow) into the matching hole in the crankcase (arrow)
 +
''Note: the lobes (egg-shaped features) of the camshaft may interfere with the lifters, so the camshaft will need to be rotated to be installed.  Also, the gear teeth between the camshaft and crankshaft will need to be mated for full installation of the camshaft.''
 
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<!-- COL 4 (IMAGES) -->
 
| [[File:G3 reass 5a.png|thumb|center|upright=1.0]]
 
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100_4184
 
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Revision as of 21:38, 26 November 2012

Group 3 Home Page

Contents

Product Explanation (Product Archaeology)

This component of Product Archaeology includes an overview of the product's assembly followed by additional sections which document important mechanisms found in the product and propose design revisions for product improvement.

Product Reassembly

With the reassembly of the Homelite fluid pump product, we're interested in more than just how to assemble the product. Certain information regarding the product's assembly will be introduced in the following preface to assembly before the assembly process is then presented.

Preface (Assembly)

With the assembly of this product, certain measures are of interest. In the assembly how-to guide that follows, speculation regarding the product's original assembly method and a difficulty scale will be used to document this respective information. In this section, the above-mentioned information will be formally introduced and defined.

Original Assembly Methods

INTRODUCE AND DEFINE THE NOMENCLATURE:

  • [H] BY HAND
  • [R] BY ROBOT??
  • [O] OTHER - TO BE DESCRIBED IN REFERENCED NOTES

WE WILL PROBABLY USE A TABLE AS IN "CONNECTION TYPES" FROM GATE 2

Difficulty Scale

THIS IS THE COPIED TABLE FROM DISASSEMBLY

PROBABLY NEEDS EDITS!

A scale to accurately judge difficulty is an important part in any proper assembly. The table below (Difficulty Scale) is designed to give the user an accurate idea of each step's difficulty. The chart is divided into five different categories ranging from 1 (easily achieved) to 5 (specialist required). Any step can be placed into the appropriate difficulty based on one, or all of the following: tools required, experience and or physical effort.

Difficulty Scale
Difficulty
Requirements
Tools/Equipment Technical Experience Physical
L
E
A
S
T


















G
R
E
A
T
E
S
T
1

No tools

General household tools
(e.g. screw driver, hammer, etc.)

Requires little to no technical experience

Very minimal


2

General mechanics tools
(socket, ratchet ext.)

Minimal

Minimal


3

Multiple tools required, used together or separate

Moderate
(must exhibit the coordination to use tools simultaneously)

Moderate


4

Requires specialty tools
(e.g. mechanical pulley puller)

Technical Experience

Maximum


5

Requires specialty machinery
(e.g. hydraulic press)

Specialty Training

Machine Assistance

Assembly Process

This section applies the previous content of this report to practical demonstration of product assembly. It is imperative that the following sections, preparation and how-to guide be read in full, and in order, for the reader to be successful in proper assembly of the product.

Preparation

Proper assembly preparation consists of thorough reading, comprehension, and execution of the following sections. Important information regarding the required tools and equipment, nomenclature, and common tasks of assembly follows.

Tools & Equipment Required

THE FOLLOWING IS COPIED FROM DISASSEMBLY

NEEDS EDITS!

Be sure to gather the Items listed in the following table:

Required Tools & Equipment
Item Details


Work Table
  • 3ft x 8ft area
  • Waist-Height
  • Sturdy and Stable
Bench Vise
  • 4in jaw
General Equipment
  • Spring Clamp
  • Funnel
  • Oil Pan
  • Fuel Container
General Hand Tools
  • Hammer
  • Rubber Mallet
  • Punch
  • Chisel
  • Pry Bar
Screwdrivers
  • Flat Head, 3/16 in
  • Flat Head, 3/8 in
  • Number 2 Philips
Wrenches and Pliers
  • 3/8 in Combination Wrench
  • 8 in Adjustable "Crescent" Wrench
  • Channel-Lock Pliers
  • Needle Nose Pliers (with side cutter)
Sockets

3/8 in Drive:

  • Metric (mm): 10, 11, 13, 14
  • Standard (in): 1/4, 1/2

1/2 in Drive:

  • Metric (mm): 13 (deep-well)
  • Standard (in): 3/4 (deep-well), 7/8
Sockets Drivers:
  • 3/8 in Drive Ratcheting Wrench
  • 1/2 in Drive Ratcheting Wrench
  • 1/2 in Drive Impact Gun
Specialty Tools
  • Pulley Puller
  • Valve Spring Compressor
  • Flywheel Wrench
Nomenclature

Refer to the tables above for the denotation of product serviceability in terms of difficulty, and also the denotation of suspected methods of original assembly as this information will be referenced only briefly in the how-to guide. Care should be taken by the dissection personnel to be aware of personal strengths and limitations (e.g. in experience, physical strength, etc.) in completing the steps of assembly.

Common Tasks of Assembly

COPIED STRAIGHT FROM THE DISASSEMBLY

MAY NEED EDITS / ADDITIONAL INFORMATION!

Threaded Fasteners:
A great majority of the procedures detailed in the how-to guide involve assembling threaded connections. Whenever the part to be installed is referred to as a nut, bolt, or screw it may be assumed that the connection is threaded.
All threaded connections in this product are right-hand threaded. To remember how to assemble a right-handed threaded connection, it may be helpful to refer to the mnemonic, "Righty-tighty, lefty-loosy," where right and left determine which way to rotate the fastener when looking at the head of the fastener. Right corresponds with rotating toward the right, or clockwise (CW), whereas left corresponds with rotating toward the left, or counterclockwise (CCW).
Using Sockets & Socket Wrenches
Whenever instructed to use a socket to install a fastener, it may not be explicitly stated that a socket wrench is to be used. In these cases, it is to be assumed that for a 3/8 in drive socket, a 3/8 in drive socket wrench is required (and similarly for 1/2 in drive). It is important also to be sure that ratcheting socket wrenches are set to ratchet in the proper rotational sense to remove a fastener. Become familiar with the ratcheting socket wrench before attempting to use it in this assembly process.
The Use of Required Tool & Equipment
It is imperative that for all tools and equipment utilized in this assembly process, the user must be fully aware of proper usage. If the user requires information regarding proper use of any tools, he/she should consult the tools' owner's manuals for proper usage procedures.
How-To Guide
The Assembly Process
Number Description Procedure Image
1 Install Crankshaft in Crankcase

Difficulty: #

Original Assembly: [R],[H],[O]

Tools Required:

  • Punch
  • Hammer
  • Non-Marring Slender Rod (hammer handle)
  1. Insert crankshaft (arrow) through hole in the crankcase (arrow) as shown
  2. Place the key (arrow) in the notch in the crankshaft as shown
  3. Slide the flywheel onto the crankshaft, taking care to align the notch in the flywheel (arrow) with the key.
  4. Thread the crankshaft nut (arrow) onto the end of the crankshaft by hand
  5. With a long, slender, non-marring rod (possibly a wooden hammer handle) inserted down through the cylinder in the crankcase (to prevent crankshaft rotation) place a punch on a tab on the crankcase nut and tap with a hammer to tighten the nut securely.
G3 reass 1a.png

100_4172

2 Install Valves

Difficulty: #

Original Assembly: [R],[H],[O]

Tools Required:

  • Valve-Spring Compressor Tool
  • Needle-Nosed Pliers
For each of (2) assemblies
  1. Insert the valve-spring (arrows) into its installed location (arrow)
  2. Use the spring-compressor tool to compress the spring
  3. Insert the valve down through its hole (arrow) Note: the valve are differently sized. Make sure the valve is inserted to the proper hole.
  4. Using needle-nose pliers to grip the retaining clip (arrow) place is on the end of the valve stem and lock it into place.
  5. Release the valve-spring compressor tool
G3 reass 2a.png

100_4175

3 Assemble Piston/Connecting Rod Assembly

Difficulty: #

Original Assembly: [R],[H],[O]

Tools Required:

  • Needle-Nose Pliers
  1. Using needle-nose pliers to grip the retaining clip, insert one retaining clip in the groove inside the piston's wristpin hole (arrow)
  2. Partially insert the wristpin (arrow) into the hole in the piston
  3. Insert the hole-end of the connecting rod (arrow) through the bottom of the piston, aligning the connecting rod hole with the hole in the piston
  4. Fully insert the wristpin into the piston, through both the piston and the connecting rod
  5. Install the second retaining clip to the other side of the piston as per the procedure in step 1
G3 reass 3a.png

100_4177

4 Install Piston / Connecting Rod Assembly

Difficulty: #

Original Assembly: [R],[H],[O]

Tools Required:

  • Needle-Nose pliers
  • Piston Ring Compressor
  •  ??? Socket
Install the piston to the crankcase
  1. Using piston ring compressor tool, insert the connecting rod through the cylinder hole and install the piston into the cylinder

Assemble the connecting rod to the crankshaft

  1. Align the connecting rod (b arrow) and crankshaft (b arrow) as shown.
  2. Plase the connecting rod cap (a arrow), bolt head locking tab (a arrow), oil slosher (a arrow) in that order in the configurations pictured
  3. Install the two bolts (b arrow) in the corresponding holes in the connecting rod and tighten
  4. Using needle-nose pliers, bend up the corners on the bolt head locking tab against the flats of the bolt heads
G3 reass 4a.png

a: 100_4179

b: 100_4182

5 Install Lifters and Camshaft

Difficulty: #

Original Assembly: [R],[H],[O]

Tools Required:

  • Hands Only
  1. Install each of (2) lifters (arrows) into their holes
  2. Install the end of the camshaft (arrow) into the matching hole in the crankcase (arrow)

Note: the lobes (egg-shaped features) of the camshaft may interfere with the lifters, so the camshaft will need to be rotated to be installed. Also, the gear teeth between the camshaft and crankshaft will need to be mated for full installation of the camshaft.

G3 reass 5a.png

100_4184

6 Install Crankshaft Support Bearing

Difficulty: #

Original Assembly: [R],[H],[O]

Tools Required:

  • t1
  • 12
pH1
  1. s1
  2. s2
G3 reass 6a.png
7 Install Crankcase Cover

Difficulty: #

Original Assembly: [R],[H],[O]

Tools Required:

  • t1
  • 12
pH1
  1. s1
  2. s2
G3 reass 7a.png
8 Install Side Flywheel Shroud

Difficulty: #

Original Assembly: [R],[H],[O]

Tools Required:

  • t1
  • 12
pH1
  1. s1
  2. s2
G3 reass 8a.png
9 Install Mesh Flywheel Shroud

Difficulty: #

Original Assembly: [R],[H],[O]

Tools Required:

  • t1
  • 12
pH1
  1. s1
  2. s2
G3 reass 9a.png
10 Install Coil & Governor Mounting Plate

Difficulty: #

Original Assembly: [R],[H],[O]

Tools Required:

  • t1
  • 12
pH1
  1. s1
  2. s2
G3 reass 10a.png
11 Install Pump Housing / Bell

Difficulty: #

Original Assembly: [R],[H],[O]

Tools Required:

  • t1
  • 12
pH1
  1. s1
  2. s2
G3 reass 11a.png
12 Install Impeller

Difficulty: #

Original Assembly: [R],[H],[O]

Tools Required:

  • t1
  • 12
pH1
  1. s1
  2. s2
G3 reass 12a.png
13 Install Engine Head

Difficulty: #

Original Assembly: [R],[H],[O]

Tools Required:

  • t1
  • 12
pH1
  1. s1
  2. s2
G3 reass 13a.png
14 Install the Carry Handle

Difficulty: #

Original Assembly: [R],[H],[O]

Tools Required:

  • t1
  • 12
pH1
  1. s1
  2. s2
G3 reass 14a.png
15 Install Exhaust Manifold

Difficulty: #

Original Assembly: [R],[H],[O]

Tools Required:

  • t1
  • 12
pH1
  1. s1
  2. s2
G3 reass 15a.png
16 Install Spark Plug and Spark Plug Wire

Difficulty: #

Original Assembly: [R],[H],[O]

Tools Required:

  • t1
  • 12
pH1
  1. s1
  2. s2
G3 reass 16a.png
17 Assemble Carburetor

Difficulty: #

Original Assembly: [R],[H],[O]

Tools Required:

  • t1
  • 12
pH1
  1. s1
  2. s2
G3 reass 17a.png
18 Install Carburetor

Difficulty: #

Original Assembly: [R],[H],[O]

Tools Required:

  • t1
  • 12
pH1
  1. s1
  2. s2
G3 reass 18a.png
19 Install Throttle Linkage & Return Spring

Difficulty: #

Original Assembly: [R],[H],[O]

Tools Required:

  • t1
  • 12
pH1
  1. s1
  2. s2
G3 reass 19a.png
20 Install Governor Plate

Difficulty: #

Original Assembly: [R],[H],[O]

Tools Required:

  • t1
  • 12
pH1
  1. s1
  2. s2
G3 reass 20a.png
21 Assemble Recoil Starter

Difficulty: #

Original Assembly: [R],[H],[O]

Tools Required:

  • t1
  • 12
pH1
  1. s1
  2. s2
G3 reass 21a.png
22 Install Recoil Starter Housing

Difficulty: #

Original Assembly: [R],[H],[O]

Tools Required:

  • t1
  • 12
pH1
  1. s1
  2. s2
G3 reass 22a.png
23 Install Crankcase Ventilation Tube

Difficulty: #

Original Assembly: [R],[H],[O]

Tools Required:

  • t1
  • 12
pH1
  1. s1
  2. s2
G3 reass 23a.png
24 Install Fuel Fill Cap

Difficulty: #

Original Assembly: [R],[H],[O]

Tools Required:

  • t1
  • 12
pH1
  1. s1
  2. s2
G3 reass 24a.png
25 Install Fuel Tank

Difficulty: #

Original Assembly: [R],[H],[O]

Tools Required:

  • t1
  • 12
pH1
  1. s1
  2. s2
G3 reass 25a.png
26 Assemble Air Filter Box

Difficulty: #

Original Assembly: [R],[H],[O]

Tools Required:

  • t1
  • 12
pH1
  1. s1
  2. s2
G3 reass 26a.png
27 Install Air Filter Box

Difficulty: #

Original Assembly: [R],[H],[O]

Tools Required:

  • t1
  • 12
pH1
  1. s1
  2. s2
G3 reass 27a.png
28 Install Oil Fill Plug

Difficulty: #

Original Assembly: [R],[H],[O]

Tools Required:

  • t1
  • 12
pH1
  1. s1
  2. s2
G3 reass 28a.png
29 Install Oil Drain Plugs

Difficulty: #

Original Assembly: [R],[H],[O]

Tools Required:

  • t1
  • 12
pH1
  1. s1
  2. s2
G3 reass 29a.png
30 Install Pump Housing Gasket Plate

Difficulty: #

Original Assembly: [R],[H],[O]

Tools Required:

  • t1
  • 12
pH1
  1. s1
  2. s2
G3 reass 30a.png
31 Install Primer Port Plug

Difficulty: #

Original Assembly: [R],[H],[O]

Tools Required:

  • t1
  • 12
pH1
  1. s1
  2. s2
G3 reass 31a.png
32 Install Pump Drain Plug

Difficulty: #

Original Assembly: [R],[H],[O]

Tools Required:

  • t1
  • 12
pH1
  1. s1
  2. s2
G3 reass 32a.png
33 Install Pump Housing Cover

Difficulty: #

Original Assembly: [R],[H],[O]

Tools Required:

  • t1
  • 12
pH1
  1. s1
  2. s2
G3 reass 33a.png
34 Install Base Feet

Difficulty: #

Original Assembly: [R],[H],[O]

Tools Required:

  • t1
  • 12
pH1
  1. s1
  2. s2
File:G3 reass 34a.png
35 EXTRA

Difficulty: #

Original Assembly: [R],[H],[O]

Tools Required:

  • t1
  • 12
pH1
  1. s1
  2. s2
File:G3 reass 35a.png

Challenges Faced with Assembly

Small Challenges
Substantial Challenges

Mechanisms

FIGURE OUT THE ORGANIZATION OF THIS SECTION!

Design Revisions

FIGURE OUT THE ORGANIZATION OF THIS SECTION!

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