HEAD 9J5554 - Caterpillar

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Remove O-ring seals (37) from break off plug (34).
Remove piston guide (36) and plunger guide (38) from break off plug (34) .
Remove bearing cup (39) and spacer (40) from break off plug (34) .
Remove pin (41) from break off plug (34) .
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Remove O-ring seal (46) from pump housing (33).
Remove spring (44) and control piston (43) from the swashplate assembly.
Remove valve plate (45) from the barrel.
Remove roller bearing cone (42) from the pump shaft.
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Remove spacer (48) and barrel assembly (47) from pump housing (33) .
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Remove bearing (52), retainer plate (49), and nine piston assemblies (50) from swashplate assembly (51) .
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Remove swashplate assembly (51) from pump housing (33) .
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Remove pump shaft (53) and roller bearing cone (54) from pump housing (33). Remove roller bearing cone (54) from pump shaft (53) .
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Remove O-ring seal (56) from pump housing (33) .
Remove shaft seal (55) from pump housing (33) .
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Remove bearings (57) from pump housing (33) .
Remove shaft seal (59) from pump housing (33) .
Use Tooling (A) in order to remove ring (60) from pump housing (33) .
Remove roller bearing cup (58) from pump housing (33) .
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Remove O-ring plug (61) and the O-ring seal.
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Remove pin (62) from barrel (47) .
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Personal injury can result from being struck by parts propelled by a released spring force.Make sure to wear all necessary protective equipment.Follow the recommended procedure and use all recommended tooling to release the spring force.
Position barrel (47) into a suitable press, as shown. Use Tooling (B) and the press in order to compress spring (64).
Use Tooling (C) to remove ring (63). Remove spring (64) and spring seat (65) from barrel assembly (47) .