Chrysler 100, 115 and 140 HP Outboard Motors Service Manual, OB 3439, Page 198Get this manual
Problem
Possible Cause
Test Procedure
4D Recheck oil level in reservoir as outlined in this section 3Leak between trim cylinder piston and shaft1Disconnect lower hydraulic tilt cylinder line from pump section Figure 7
This eliminates tilt unit from test2Install pressu re gauge (0-2000 PSI) or pipe plug in hole where line was removed Install cap plug on end of tilt cylinder lineFigure 8Lift engine using trim cylinder3AA pressure gauge will show pressure at first If pressure starts to dropthere is leak in the trim unit of valve body and pump38 If pipe plug was installed, watch for gradual decline in motor angle This means leak in the trim unit or valve body and pump 4If no leakage, proceed to next cause If leakage notedproceed as followsRemove pressure gauge or pipe plug and reinstall tilt line