Takeuchi TB 175 Handbuch Seite 806

4. Disassembly, inspection and reassembly of engines
[Reassemble]
Apply sealant (code No.977770-01212) and install the
mounting flange by matching the two dowel pins. After
assembly, raise the engine with its mounting flange on
the bottom side.
Unforeseen injury may arise due to falling of slipping
when raising or reversing the engine. Carefully
operate so as not to lose balance.
Point4: Journal bearing cap
[Disassemble]
• Before removing the journal bearing, measure the
crankshaft side gap. Measure it in either method
because there are the next two methods.
1)Install a dial gage on the cylinder block, and move a
crankshaft in front and back, and measure the side
gap as shown in the right figure.
2)Put a thickness gauge in the clearance between
thrust metal and crankshaft directly, and measure it.
Side gap standard
Model
3TNV82A to 88
4TNV94L to 106
[Reassemble]
• If the side gap exceeds the standard, replace the
thrust metal with an oversize one.
Machine the standard width of the crankshaft thrust
part into the dimension of the below table at the same
time.
Refer to a parts catalog when ordering the part.
The surface finishing precision (refer to 4.4.5(2) in
Chapter4):
1.6
0.25 mm Oversized thrust metal (0.25 DS)
0.25DS Thrust metal assy code Standard thickness
3TNV82A 119810-02940
TNV84 to 88 129150-02940
4TNV94L•98 129900-02940
4TNV106(T) 123900-02940
The standard width of the crankshaft thrust part
Model Standard thickness
3TNV82A 25.250 to 25.271
TNV84 to 88 28.250 to 28.271
4TNV94L•98 32.250 to 32.275
4TNV106(T) 36.250 to 36.275
(R.1)
Standard Limit
0.140 to 0.220 0.28
0.130 to 0.230 0.28
2.055 to 2.105
2.055 to 2.105
2.055 to 2.105
2.555 to 2.605
mm
Side gap measurement 1
mm
Standard
width
Thrust
Side gap measurement 2
mm
92
Cylinder block
Crankshaft
Thrust metal
face
Bearing cap
Thickness gauge