G643 (E) Service Manual Chapter 3. Engine Mechanical System 109
Coolant Pump Installation
Install or Connect
1. Install gasket to block
2. Install pump to location.
3. Assemble bolts to pump and toque to: 40 N·m
(30 lb·ft.)
4. Assemble pulley to pump.
5. Assemble bolts to pulley and torque to 25 N·m ±
6 (18.0 ± 4.5 lb·ft.)
Engine Accessory Installation
Install the engine accessories (distributor, oil filter,
generator, etc.). Connect all vacuum hoses and
electrical equipment the same way as removed.
Engine Setup and Testing
After overhaul, turn the engine over manually and
inspect for any unusual noises or evidence that
parts are binding. If parts are binding disassemble
engine to determine the source.
1. Install oil filter (if not already installed).
2. Fill the crankcase with the proper quantity and
grade of engine oil.
IMPORTANT: If a new camshaft or hydraulic
lifters were installed, add Engine Oil Supplement
GM P/N 1052367 (or equivalent) to the engine oil.
3. Fill the cooling system with the proper quantity
and grade of coolant.
4. Crank the engine several times. Listen for
anyunusual noises or evidence that parts are
binding.
5. Refer to “Specifications” for ignition timing
adjustment.
6. Start the engine and listen for unusual noises.
7. Run the engine at about 1000 RPM until it is at
operating temperature.
8. Listen for sticking lifters and other unusual
noises.
9. Check for oil and coolant leaks while the engine
is running.
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