TUBE ASSEM. 4J7929 - Caterpillar

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Remove shaft (47) from housing (3) .
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Remove retaining ring (74) and bearing (73) from shaft (47) .
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Remove bolts (75). Remove cover (76) and the piston assembly from housing (3) .
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Note: Measure the distance and record the distance from the end of limiting screw (79) to nut (78) for assembly purposes.
Loosen nut (78). Remove limiting screw (79) from cover (76) .Note: Measure the distance and record the distance from the end of piston assembly (77) to nut (80) for assembly purposes.
Remove nut (80). Remove piston assembly (77) from cover (76) .
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Remove O-ring seal (81) from cover (76) .
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Use the following procedure and disassemble piston assembly (77) .
Remove retaining ring (82). Remove rod (83) and the spring from piston (84) .
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Remove O-ring seal (85) from rod (83) .
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Sudden release of spring force can cause injury.To prevent the possibility of injury, follow the procedure to relieve the spring pressure.
Position Tooling (A), rod (83), and spring (88) in a press, as shown. Put slight tension on spring collar (87). Remove spring retainers (86) and slowly release the spring tension.
Remove spring collar (87), spring (88), spacer (89), and spring collar (90) from rod (83) .
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Remove two guide rings (91) and two seal rings (92) from housing (3) .
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Note: Measure the distance and record the distance from the end of limiting screw (94) to nut (93) for assembly purposes.
Loosen nut (93). Remove limiting screw (94) from housing (3) .
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Remove plugs (95) from housing (3) .
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Use an allen wrench and remove two nozzles (96) from housing (3) .