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2.
Inspect spring for cracks, breaks, and abnormal bends. Using spring tester and torque wrench, compress spring
to 1.68 in. (42.67 mm) and note compression force on torque wrench. Compression force must be 14-17 lb.-ft.
(19-23 N•m).
3.
Inspect all other metal parts for cracks, bends, breaks, and damaged threads. Replace defective parts.
c.
INSTALLATION
1.
Using magnetic retrieving tool, install directional slide (5) in engine block (3).
2.
Install spring (6) in timing gear cover (4) and engine block (3).
3.
Install washers (7 and 8) and machine plug (9) in timing gear cover (4).
d.
ADJUSTMENT
NOTE
Perform step 1 only if engine assembly is Installed.
1.
Unplug and tag connector (1) from pressure switch (2).
2.
Remove pressure switch (2) from flywheel housing (10).
3.
Connect multirange pressure gage to flywheel housing (10).
4.
Start and warm up engine assembly (see TM 5-2420-222-10). After warm-up, increase engine speed to 2500
rpm.
5.
Check reading of multirange pressure gage in flywheel housing (10). Reading must be 35-65 psi (241-448 kPa) at
180°F-222°F (82°C-106C).
6.
Shut down engine assembly (see TM 5-2420-222-10).
NOTE
If pressure reading was within specification, skip steps 7 through 10.
7.
Remove machine plug (9) and washers (7 and 8) from timing gear cover (4).
8.
If pressure reading was too low, add another washer (7). Ensure that there are never more than four washers
present.
9.
If pressure reading was too high, remove one washer (7). If no washer is present, add washer.
10.
Install machine plug (9) and washers (8) in timing gear cover (4). Repeat steps 4 through 6.
11.
Disconnect multirange pressure gage from flywheel housing (10).
12.
Install pressure switch (2) in flywheel housing (10).
NOTE
Perform step 13 only If engine assembly is Installed.
13.
Plug connector (1) in pressure switch (2).
3-127/(3-128 Blank)
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