Mercury 2.8 Diesel, Operation & Maintenance Manual

Page: 58 / 123

Section 4 - Maintenance
Page 50 90-8M0113987
eng
DECEMBER 2015
IMPORTANT: If fluid is not visible in the fluid reservoir, see your Mercury Diesel authorized repair facility.
Filling
1. Remove the fill cap and dipstick and observe the fluid level.
2. Add the specified fluid to bring the fluid level up to the proper level.
Tube Ref No. Description Where Used Part No.
114
Power Trim and Steering Fluid Power-assisted steering system 92-858074K01
28
Dexron III Automatic
Transmission Fluid
Power-assisted steering system Obtain Locally
3. Install the fill cap and dipstick.
Changing
Power‑assisted steering fluid does not require changing unless it becomes contaminated. See your Mercury Diesel authorized
repair facility.
Engine Coolant
!
CAUTION
A sudden loss of pressure can cause hot coolant to boil and discharge violently resulting in serious injury from burns. Allow
the engine to cool down before removing the coolant pressure cap.
Check Coolant
IMPORTANT: When possible, check the engine coolant before starting the engine.
1. Allow the engine to cool.
2. Remove the pressure cap from the coolant expansion tank.
3. The coolant level in the coolant expansion tank should be above the coolant level indicator attached to the bottom of the
coolant cap.
a - Filler neck
b - Coolant cap
c - Level indicator
4. If the coolant level is low:
a. Inspect the coolant recovery system for leaks.
b. Inspect the gasket in the pressure cap for damage and replace if necessary.
c. The pressure cap maintains pressure on the cooling system and may not be holding pressure properly. To have the
cap tested, contact your Mercury Diesel authorized repair facility.
d. Add the specified coolant as necessary. Refer to
Add Coolant
.
IMPORTANT: Tighten the pressure cap to prevent coolant loss.
5. If the coolant level is correct, install the pressure cap and tighten.
Filling
1. Allow the engine to cool.
2. Remove the pressure cap from the coolant expansion tank.
37255
a
b
c