Mercury 45 Jet 50-55 - Gear Housing Installation; Filling Gear Housing with Lubricant; Gear Housing Pressure Test

6A-24 - LOWER UNIT 90-817643R1 DECEMBER 1996
12. If water tube seal (a) stayed on water tube (inside of
driveshaft) pull seal from water tube.
13. Lubricate I.D. of water tube seal (a) with Quicksilver
2-4-C Marine Lubricant (P/N 92-90018A12) and in-
stall.
51206
a
a - Water Tube Seal
Gear Housing Pressure Test
1. Remove vent plug and install pressure test gauge.
Tighten securely.
2. Pressurize housing to 10-12 p.s.i. and observe gauge
for 5 minutes.
3. Rotate driveshaft, prop shaft and move shift rod while
housing is pressurized to check for leaks.
4. If pressure drop is noted immerse housing in water.
5. Re-pressurize to 10-12 p.s.i. and check for air bubbles.
6. Replace leaking seals as necessary. Retest housing.
NOTE: It should hold 10-12 p.s.i. for 5 minutes.
7. Remove tester from housing and install vent plug.
Gear Housing Installation
Filling Gear Housing with Lubricant
NOTE: Gear housing lubricant capacity is approximately
11.5 fl. oz. (340 ml).
! WARNING
If gear housing is installed on outboard, disconnect
(and isolate) spark plug leads from spark plugs before
working near the propeller.
!
CAUTION
Do not use automotive grease in the gear housing. Use
only Quicksilver Gear Lube.
1. Remove any gasket material from “Fill” and “Vent”
plugs and gear housing. Install new gaskets on “Fill”
and “Vent” plugs.
IMPORTANT: Never add lubricant without removing
“Vent” plugs. Gear housing cannot be filled because
of trapped air. Fill gear housing when driveshaft is in
a vertical position.
2. Remove “Fill” plug and gasket (a).