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TM 5-2420-222-34
3-20. ENGINE OIL PAN REPLACEMENT (Con’t).
WARNING
Use extreme caution when handling heavy parts. Lifting device Is required when
parts weigh over 50 lb (23 kg) for a single person lift, over 100 lb (45 kg) for a two
person lift, and over 150 lb (68 kg) for a three or more person lift. Keep clear of
heavy parts supported only by lifting device. Failure to follow this warning may
cause serious Injury or death to personnel.
2.
With the aid of an assistant and hydraulic jack, position oil pan (22) and new gasket (23) in place under engine
block (25) and against timing gear cover (26).
3.
Loosely Install 22 screws (6, 10, 11, 16,17, 18, 20, and 21) and new lockwashers (5 and 19) in oil pan (22) and
engine block (25).
4.
Install six screws (9) and new lockwashers (5) in oil pan (22) and timing gear cover (24). Torque screws to 35 lb.-
ft. (47 N•m).
NOTE
Screws securing oil pan have different lengths and hardness. Screws with three
slash-marks must be torqued to 35 Ib.-ft. (47 N-m). Screws with six slash-marks
must be torqued to 50 Ib.-ft. (68 N•m).
5.
Tighten 22 screws (6, 10, 11, 16, 17, 18, 20, and 21) until snug. Torque four screws (18 and 20) to 35 lb.-ft. (47
N•m).
6.
Torque 18 screws (6, 10, 11, 16, 17, and 21) to 50 Ib.-ft. (68 N•m).
7.
Install two screws (14) and new lockwashers (15) in oil pan (22), flywheel housing (26), and reverser housing (1).
Torque screws to 250 Ib.-ft. (339 N•m).
NOTE
There are spacers on both sides of oil pan. Installation and clearance
measurements are the same for both sides. Right side is shown. Repeat steps 8
through 10 for left side.
8.
Position spacers (7 and 8) in place against oil pan (22) and frame assembly front support (2).
9.
Using thickness gage, measure clearance between spacers (7 and 8) and frame assembly front support (2).
Clearance must be 0.000-0.001 in. (0.000-0.025 mm).
CAUTION
Ensure that mating surfaces of oil pan, spacers, and frame assembly front support
have been properly cleaned before sealing compound is applied. Dirty surfaces
may prevent sealing compound from sticking causing Improper fit and damage to
parts. Ensure that no sealing compound gets In screw holes. This will cause false
torque readings which may damage parts.
10.
If clearance exceeds specification, add one spacer (7 or 8) and repeat steps 7 and 8. If clearance satisfies
specification, apply thread sealing compound to spacers and place back in position.
11.
Install two screws (3) and new lockwashers (4) in frame assembly front support (2) and oil pan (22). Torque
screws to 300 Ib.-ft. (407 N•m).
3-118
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