TROUBLESHOOTING PROCEDURES (Continued)
TEST OR INSPECTION
Boat must be in water to run engine. For exception during organizational or higher maintenance
actions, refer to page 3-326; TM 5-1940-277-20.
Start engine and let run for 2 minutes with transmission in neutral. Shut engine off and wait 5
minutes and then check oil level. Must be to mark on dipstick.
Fill with fluid to proper level (refer to TM 5-1940-277-10).
Fluid level all right go to step 2.
Check for improperly adjusted control linkage (refer to TM 5-1940-277-20).
If linkage adjustment is correct go to step 3.
Test for low oil pressure with transmission in neutral (refer to page 2-21).
Clean oil strainer (refer to TM 5-1940-277-20).
Clean pressure regulator valve (refer to page 2-327).
Check for weak pressure regulator spring.
Replace defective oil pump (refer to page 2-237).
If pressure all right contact supervisor.
Test transmission in forward position.
Report defective transmission to General Support.