42
OM-C3 11/21
Service and Maintenance - 500 Hour
Install Heat Exchanger Core
Thoroughly inspect condition of end cap sealing O-rings
(A, below). Sealing O-rings may be reused if not
excessively worn or damaged during disassembly.
Replace sealing rings as necessary.
Lubricate front and rear end cap O-rings with clean
multi-purpose grease.
Inspect heat exchanger end cap - O-rings (A)
Install heat exchanger - end cap (B), housing (C)
1. Install rear end cap, install cap screws and evenly
tighten until end cap (B) is about 6.4 mm (0.25 in.)
from housing (C). Index end cap in same position as
removed.
2. Install heat exchanger core. Make sure core is properly
seated in rear end cap to avoid cutting O-ring.
3. Install front end cap with heat exchanger core properly
seated in cap and cap properly indexed in same position
as removed.
4. Install and evenly tighten front end cap screws until cap
contacts housing. Evenly tighten rear end cap screws
until cap contacts housing. Tighten front and rear end
cap screws to 24 N·m (18 lb-ft).
5. Connect all water piping and tighten hose clamps
securely. Fill cooling system with the proper amount
and concentration of ethylene-glycol base antifreeze.
6. Open sea cock, start engine and check for leaks.
