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REMOVAL - TM-5-4210-224-14-P0519
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TM-5-4210-224-14-P 250 6PM Mini-Pumper Firefighting Truck Model No.:CM-KFT-3 Manual
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INSTALLATION - continued - TM-5-4210-224-14-P0521
TM 5-4210-224-14&P
6-17. CRANKSHAFT AND MAIN BEARING MAINTENANCE. (Continued)
h. Install the number 5 (rearmain bearing cap by
)
c. Apply engine oil (Appendix D, Item 22) to inserts
first applying a thin film of anaerobic sealant
of the proper size and position the plain end
(Appendix D, Item 41) to the bearing cap,
(without the bearing tang) of the insert between
keeping the sealant off the bearing and seal,
the crankshaft and the notched side of the block.
being careful not to get any sealant in the
bearing cap oil relief slot.
d. By rotating the crankshaft, install the insert into
the engine block.
i. Apply a light coat of engine oil (Appendix D, Item
22) to the crankshaft surface that will contact the
e. Remove the tool.
seal, and to the main bearing cap bolt threads.
f.
Apply engine oil (Appendix D, Item 22) to the
CAUTION
lower main bearing inserts and install them to the
The main bearing caps are to be
main bearing caps.
tapped into place with a brass or
leather mallet before the attaching
bolts are installed. Do not use the
NOTE
attaching bolts to pull the main
Measure
the
main
bearing
bearing caps into their seats, as
clearance If the bearing clearance
this may damage the bearing cap
is within specifications: #1,2,3, and
and/or block.
4 = 0.0018 0.0033 inch (.04572
.08383 mm), #5 = 0.0022 0.0037
j. Tap the main bearing cap into place with a brass
inch  (.05588  .09398  mm),  the
or leather mallet.
bearing insert is satisfactory. If the
clearance
is
not
within
k.
Install the inner bolts and torque to 110 ft-lbs
specifications, replace the insert.
(150 NĚ ).
m
Always replace both upper and
lower inserts as a unit.
l. Install the outer bolts and torque to 100 ft-lbs (135
NĚ ).
m
g.
Install rear crankshaft oil seal halves to the
block.
m. Install numbers 1. 2. and 4 main bearing caps
and bolts tightening to same specification and
sequence as number 5.  Main bearing caps
steps k and 1.
6-28

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