DETROIT DIESEL 53
Cylinder Head 1.2
1. Disconnect the exhaust piping at the exhaust manifold.
2.
Drain the cooling system.
3.
Remove the air cleaner(s) or air silencer.
4.
Disconnect the fuel lines at the cylinder head.
5.
Remove the thermostat housing and the thermostat as an assembly.
6.
Clean and remove the valve rocker cover.
7. Disconnect and remove the fuel rod between the governor and the injector control tube lever. Remove the fuel rod
cover, if used.
8.
Remove the exhaust manifold.
9.
Remove the injector control tube and brackets as an assembly.
10. If the cylinder head is to be stripped for reconditioning of valves and valve seats or for a complete cylinder head
overhaul, remove the fuel pipes and injectors at this time. Refer to Sections 2.1 or 2.1.1 for removal of the injectors.
11. Remove the cylinder head bolts. Then, lift the cylinder head off of the cylinder block, with lifter tool J 22062-01 (Fig.
CAUTION: When resting the cylinder head assembly on a bench,
protect the cam follower rollers and the injector spray tips by resting
the valve side of the head on 2" thick wood blocks.
12. Remove the cylinder head compression gaskets, oil seals and water seals.
Disassemble Cylinder Head
If a cylinder head is removed for inspection and possible repair or replacement, remove the following parts:
1.
Fuel injectors, if not previously removed.
2.
Fuel connectors.
3.
Cam follower guides and cam followers.
4.
Rocker arms, rocker arm shafts, brackets, push rods, push rod springs, spring seats and spring seat retainers.
5.
Exhaust valves and valve springs.
The removal procedures to be followed, when removing the parts mentioned
above, are covered in their respective sections of this manual.
Clean Cylinder Head
After the cylinder head has been stripped of all the component parts and all of
the plugs (except cup plugs) have been removed, steam clean the head
thoroughly.
Thoroughly clean a new service cylinder head to remove all of the rust
preventive compound, particularly from the integral fuel manifolds, before the
plugs are installed in the fuel manifolds and the head is mounted on the engine.
A simple method of removing the rust preventive compound is to immerse the
head in solvent, oleum or fuel oil; then, go over the head and through all of the
openings with a soft bristle brush. A suitable brush for cleaning the fuel
manifolds can be made by attaching a 1/8" brass rod to brush J 8152. After
cleaning, dry the cylinder head with compressed air.
Fig. 2 - Lifting Cylinder Head Assembly
Off Cylinder Block with Tool J 22062-01
Inspect Cylinder Head
1.
Check the cylinder head for leaks as follows:
a.
Seal off the water holes in the head with steel plates and suitable rubber gaskets held in place by bolts.
July, 1970
SEC. 1.2
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