Group 31 - Honda Engine - Revision history

MAE277 31 09: /* Introduction */

2009-12-16T17:38:21Z

Introduction

MAE277 31 09: /* Re-Assembly */

2009-12-07T21:20:49Z

Re-Assembly

MAE277 31 09: /* Re-Assembly */

2009-12-07T20:42:36Z

Re-Assembly

MAE277 31 09: /* Re-Assembly */

2009-12-07T20:40:45Z

Re-Assembly

MAE277 31 09: /* Re-Assembly */

2009-12-07T20:31:36Z

Re-Assembly

MAE277 31 09: /* Re-Assembly */

2009-12-07T20:28:52Z

Re-Assembly

MAE277 31 09: /* Re-Assembly */

2009-12-07T20:21:39Z

Re-Assembly

MAE277 31 09: /* Re-Assembly */

2009-12-07T20:06:06Z

Re-Assembly

MAE277 31 09: /* Re-Assembly */

2009-12-07T19:39:10Z

Re-Assembly

MAE277 31 09: /* Re-Assembly */

2009-12-07T19:37:30Z

Re-Assembly

@@ Line 27: / Line 27: @@
 '''
-== Introduction==
+== Executive Summary==
 '''
@@ Line 71: / Line 71: @@
 [[Causes For Corrective Action]]
 ==Disassembly==

@@ Line 901: / Line 901: @@
-Our reassembly was much shorter than our disassembly.  This was because our members doing the actual reassembly work already were familiar with the components and procedures involved in this engine, as opposed to disassembly, which was the first time anyone had actually seen the interior workings of the engine.
+Our reassembly was much shorter than our disassembly.  This was because our members doing the actual reassembly work were already familiar with the components and procedures involved in this engine. That is opposed to disassembly, which was the first time anyone had actually seen the interior workings of the engine.
-In the procedure, we found that many of the steps could be followed in reverse, with minimal complications.  However in several instances we were confronted with problems we did not have to account for during dissection. The first occurred when we tried to place the piston/rod assemblies into the block.  The piston rings expanded to a radius larger than that of the piston chamber and had to be manually compressed in order to get them into the chamber.  This required two members, and the use of a flat head screwdriver to hold the piston rings once they had been compressed by hand.  To make the operation simpler one ring was compressed at a time, and the pistons were pushed into the chamber one ring at a time.
+In the procedure, we found that many of the steps could be followed in reverse, with minimal complications.  However in several instances, we were confronted with problems we did not have to account for during dissection. The first occurred when we tried to place the piston/rod assemblies into the block.  The piston rings expanded to a radius larger than that of the piston chamber and had to be manually compressed in order to get them into the chamber.  This required two members, and the use of a flat head screwdriver to hold the piston rings once they had been compressed by hand.  To make the operation simpler one ring was compressed at a time, and the pistons were pushed into the chamber one ring at a time.
-To find the correct tools to use we only had to consult our disassembly notes, and no additions were needed.  The only extra instance of an extra tool being needed was in the case of the piston rings, but the screwdriver used was one already required for other assemblies and so was readily available.  We attribute this to the use of mainly bolts and screws to secure the components on this engine together.  These require the same tools and skills for insertion and removal, which potentially saved us much time.
+To find the correct tools to use we only had to consult our disassembly notes, and no additions were needed.  The only instance of an extra tool being needed was in the case of the piston rings. However, the screwdriver used was already required for other assemblies and was readily available.  We attribute this to the use of mainly bolts and screws to secure the components of this engine together.  These require the same tools and skills for insertion and removal, which potentially saved us much time.
 With our product back to the configuration it was given to us, it still is unable to operate as intended.  It is still lacking many critical parts such as a fuel tank, battery, throttle for user input, and an exhaust to manage waste products.

@@ Line 766: / Line 766: @@
 . Light compression force.
-. Coordinated Compression force.
+. Use of simple tools.
-. Use of simple tools.
+. Use of tools and coordinated compression force.
-. Use of tools and coordinated compression force.
+. Assorted tool use and careful application of force and spring compression.
-−
-. Assorted tool use and careful application of force and spring compression.
 [[Image:Reassembly1.jpg|300px|thumb|Right|Piston/Rod/Crankshaft assembled out of engine]]
@@ Line 816: / Line 814: @@
-DIFFICULTY = 4
+DIFFICULTY = 3
 <nowiki>Tools Needed:</nowiki>
@@ Line 829: / Line 827: @@
 o	Replace the Cam Chain Tensioner by placing it into position with the bolt going through the opening in the cylinder head wall.  Secure with a cap nut on the exterior of the Head.
 ----
@@ Line 845: / Line 844: @@
 o	We placed the Camshafts back into position as we found them.
@@ Line 853: / Line 853: @@
-DIFFICULTY = 5
+DIFFICULTY = 4
 <nowiki>Tools Needed:</nowiki>

← Older revision		Revision as of 20:40, 7 December 2009
Line 773:		Line 773:

	5. Assorted tool use and careful application of force and spring compression.		5. Assorted tool use and careful application of force and spring compression.
		+
		+	[[Image:Reassembly1.jpg\|300px\|thumb\|Right\|Piston/Rod/Crankshaft assembled out of engine]]
		+


Line 886:		Line 889:

	o Place the rubber seals on the exhaust valves of the Carburetors. Tighten the eight clamps using a Phillips head screwdriver.		o Place the rubber seals on the exhaust valves of the Carburetors. Tighten the eight clamps using a Phillips head screwdriver.
		+
		+
		+	[[Image:Reassembly4.jpg\|300px\|thumb\|left\|Completed assembly minus the Crankshaft cover]]
		+
		+	[[Image:Reassembly5.jpg\|300px\|thumb\|center\|Camshafts in position]]

@@ Line 874: / Line 874: @@
- >Replace the Needle Jet Holder into the largest of the openings.  Using a Philips head screwdriver screw the Main Jet into the Needle Jet Holder.
+>Replace the Needle Jet Holder into the largest of the openings.  Using a Philips head screwdriver screw the Main Jet into the Needle Jet Holder.
- >Screw the Pilot Screw into its position using a Flat Head screwdriver.
+>Screw the Pilot Screw into its position using a Flat Head screwdriver.
- >Replace the Float Chamber cover and secure with three screws using a Phillips head screwdriver.
+>Replace the Float Chamber cover and secure with three screws using a Phillips head screwdriver.

@@ Line 802: / Line 802: @@
 o	For the Piston heads to fit into the Piston Chamber the Piston Rings must be compressed.  This required the use of screwdrivers to accomplish.
-o	Inverting the bottom half of the block containing the Piston/Rod assemblies, the Crankshaft was placed onto the rods and secured in place by two nuts per Rod.
+o	Inverting the bottom half of the block containing the Piston/Rod assemblies, the Crankshaft was placed onto the rods and secured in place by two rod bolts.  A 10 mm socket is needed to tighten the 8 nuts.
 o	The orientation of the Pistons must be correct before the Rods are secured to the Crankshaft.  This is done by making sure the “in” side of the Piston head faces the intake port.
@@ Line 823: / Line 823: @@
 o	Position the bottom of the block so that the Crankshaft is facing down and the Piston Heads are exposed.  Place the Gasket on the exposed surface of the head so that all openings match up.
-o	Place the upper portion of the block on the Gasket, making sure all openings line up.  Hold the two halves together and secure together with screws.  We secured the two halves together using only two screws because of a lack of knowledge of which screws to use.
+o	Place the upper portion of the block on the Gasket, making sure all openings line up.  Hold the two halves together and secure them with the 12 Flange Bolts using a 12 mm Allen key
 ----

@@ Line 868: / Line 868: @@
 o	Replace the the diaphragm spring, jet needle holder, o-ring, jet needle holder spring, the jet needle and  washer, all which go inside the vacuum chamber.  Finish by replacing the Cover and securing it with three screws using a Phillips head screwdriver.
 o	In the float chamber, the float valve has to be replaced first.  Once the float valve is in place the float can be placed into position, secure the float using the float pin.
->Once the float is loosened the float valve with be released as well.
+ >Replace the Needle Jet Holder into the largest of the openings.  Using a Philips head screwdriver screw the Main Jet into the Needle Jet Holder.
->Removing the vacuum chamber cover consists of removing three screws using phillips head screw driver.
+ >Replace the Float Chamber cover and secure with three screws using a Phillips head screwdriver.
-o	Two rods slide through all the Carburetors, and are secured by a nut on each end.
+o	Place the rubber seals on the exhaust valves of the Carburetors.  Tighten the eight clamps using a Phillips head screwdriver.

@@ Line 867: / Line 867: @@
 o	Starting Enrichment Assembly.  Beginning with the starting enrichment valve, place the valve spring on the valve and cover with the valve nut using a 10 mm socket.  The whole assembly screws into the side or the carburetor.  Repeat this for each carburetor.
-o	Replace the spring loaded assembly consisting of the diaphragm spring, jet needle holder, o-ring, jet needle holder spring, the jet needle.  Finish by replacing the Cover and securing it with three screws.
+o	Replace the the diaphragm spring, jet needle holder, o-ring, jet needle holder spring, the jet needle and  washer, all which go inside the vacuum chamber.  Finish by replacing the Cover and securing it with three screws using a Phillips head screwdriver.
 o	Two rods slide through all the Carburetors, and are secured by a nut on each end.

@@ Line 790: / Line 790: @@
 <nowiki>Tools Needed:</nowiki>
-*''Rubber Mallet (if necessary)
+*''Rubber Mallet (if necessary)''
 ''
@@ Line 862: / Line 863: @@
-o	The interior components of the Carburetors need to be replaced, reassembly in this order:
+-->	The interior components of the Carburetors need to be replaced, this includes:
-o	Starting Enrichment Assembly
+o	Starting Enrichment Assembly.  Beginning with the starting enrichment valve, place the valve spring on the valve and cover with the valve nut using a 10 mm socket.  The whole assembly screws into the side
 o	Replace the spring loaded assembly consisting of the diaphragm spring, jet needle holder, o-ring, jet needle holder spring, the jet needle.  Finish by replacing the Cover and securing it with three screws.