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INSTALLATION - TM-5-4210-224-14-P0520
Up
TM-5-4210-224-14-P 250 6PM Mini-Pumper Firefighting Truck Model No.:CM-KFT-3 Manual
Next
Section III. MAINTENANCE OF TRANSMISSION ASSEMBLY
TM 5-4210-224-14&P
6-17. CRANKSHAFT AND MAIN BEARING MAINTENANCE. (Continued)
n. Install the number 3 (center) main bearing cap
NOTE
and bolts.
Measure connecting rod bearing
o. Torque bolts initially to 10 ft-lbs (14 NĚ ).
m
clearance.
If  the  clearance
p. Tap the end of the crankshaft first rearward then
exceeds 0.  0018 0.  0039 inch,
forward with a lead hammer. This will line up
select a new, correct size bearing
the rear main bearing and crankshaft thrust
and remeasure clearance.
surfaces.
q.  Tighten remaining main bearing cap bolts to
v. Install the connecting rod cap nuts and torque to
specifications as listed in steps k, and 1.
48 ft-lbs (65 NĚ ).
m
r.
With the crankshaft forced forward, measure
w. Measure the connecting rod side cleance by
ar
crankshaft end play at the front end of the
using a feeler gauge between the connecting
number 3 main bearing with a feeler gauge.
rod and crankshaft.  Correct clearance is 0.
The proper clearance is 0. 003937 0. 0098425
0067 0. 0248 inch (0. 170.63 mm).
inch (0.10 - 0.25 mm).
x. Install connecting rod caps and piston (paragraph
NOTE
Burrs on the bearing cap, foreign
matter between the insert and the
y. Install oil pan (paragraph 4-114).
block or the bearing cap, or faulty
insert  could  cause  a  lack  of
z. Install timing chain (paragraph 6-12).
clearance at the bearing.
aa. Install front covers (paragraph 6-11).
s. Turn the crankshaft to check for binding. If the
crankshaft does not turn freely, loosen the main
bb. Install torsional damper (paragraph 6-10).
bearing cap bolts, one at a time, until the tight
bearing is located.
cc. Install glow plugs (paragraph 4-108).
t. Install the connecting rod earing inserts.
b
NOTE
dd. Install dipstick and tube (paragraph 4-113).
Used  bearing  inserts  must  be
installed in their original locations.
ee. Install engine (paragraph 5-8).
u.
Install connecting rods to the crankshaft by
pulling the connecting rods down, making sure
the connecting rod bearing insert stays in place.
6-29

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