Leakage Check; Propeller - BRP Johnson 4HP Service Manual

GEARCASE

LEAKAGE CHECK

LEAKAGE CHECK
Check for leakage of the oil seals and O-ring when applying
the specified pressure inside of the gearcase.

S34 Stevens Pressure Tester
772269: Adapter
Procedure
1. Install the special tool into the oil level hole.
2. Connect an air pump into the special tool.
3. Rotate the driveshaft and the propeller shaft clockwise
several times and then apply the specified pressure for
the test.
NOTE:
Apply low initial pressure of 20 – 40 kPa (0.2 – 0.4 kg/cm
2.8 – 5.7 psi) first, then apply the specified pressure.
Leakage test pressure: 100 kPa (1.0 kg/cm
Do not exceed pressure of 110 kPa (1.1 kg/cm
or damage to oil seals will result.
4. Once stabilized, the pressure should remain steady for at
least 5 minutes.
If the pressure does not fall, sealing performance is cor-
rect.

PROPELLER

•
Apply Triple-Guard grease to the propeller shaft.

Triple-Guard Grease
•
Push the cotter pin through the nut and propeller shaft,
then bend the pin securely.
To prevent injury from the propeller blades, wear gloves.
8-14
2
;
2
; 14.2 psi)
2
; 15.6 psi)