2-57. INJECTION NOZZLE REPLACEMENT (CONT)
b. Compression Testing
1 Screw compression tester into cylinder head.
Put compression chart in tester.
To prevent engine from starting and possibly injuring personnel, make sure injection pump stop
lever is in the stop position.
Hold the injection pump stop lever in the stop position throughout test.
Crank engine three to five turns.
Check reading of compression chart. Compression should be 363-392 psi. If compression not within this range,
notify your supervisor.
Remove compression tester from engine.
Repeat steps 1 thru 6 for each cylinder to be tested.