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ServiceNOTE: Refer to Fig. 5 for steps 10 to 17.10. Remove the washer (27) and rubber pad (28) fromthe cylinder (44).11. Remove the trip rod bearing (1), using a 1 in.deep-well socket wrench. Remove the gasket (16),v-block packing (21), and backup washer (20) fromthe bearing.CAUTIONBe careful not to tilt the cylinder when removing itfrom the piston to avoid damaging the smooth innersurface of the cylinder.12. Remove the screws (11) and lockwashers (6) andcarefully pull the cylinder (44) straight up off thepiston (2).13. Pull the piston (2) and trip rod (22) up out of thebase (50 or 66). Remove the o-ring (29) from thepiston.NOTE: The connecting rod stud (36) is fastened to thepiston shaft (2) with anaerobic sealant, and may bedifficult to remove.CAUTIONBe careful not to damage the polished surface of thepiston shaft.14. Lock the hex of the piston shaft (2) in a vise andunscrew the connecting rod stud (36) from thepiston shaft.CAUTIONHandle the trip rod assembly (22) carefully. Nicksand scratches cause premature spring failure.NOTE: A damaged trip rod cannot be repaired; use anew one.15. Remove the trip rod (22) from the piston (2).NOTE: Check that the clearance between the insideshoulders of the trip rod spring guides is exactly 5.5 in.(139.7 mm). If the clearance is different, replace thetrip rod; do not attempt to adjust it.16. Remove the v-block packing (23), backup washer(24), and gasket (19) from the base (50 or 66).17. Turn the base over. On Models 208356 and625794, remove the wiper seal (25). Inspect thebearing (67) in place. Remove only if damaged.On Model 208357 only, remove the packing retainer(63), spring (60), male gland (58), v-packings(61), female gland (57), bearing (64), and washer(65). Refer to the parts drawing on page 22.10 307049
ServiceModel 208356 Shown27281164420212211Detail of Piston2262950 or 662207270Detail of Base1913650 or 660727423241Clearance between the inside shoulders must beexactly 5.5 in. (139.7 mm).6725Fig. 50727130704911
Page 1 and 2: Instructions-Parts List7 in. (178 m
Page 3 and 4: SKIN INJECTION HAZARDWARNINGSpray f
Page 5 and 6: InstallationGeneral InformationNOTE
Page 7 and 8: TroubleshootingWARNINGMoving parts
Page 9: ServiceNOTE: Refer to Fig. 4 for st
Page 13 and 14: ServiceReassembly1. Clean all parts
Page 15 and 16: ServiceModel 208356 ShownDetail of
Page 17 and 18: ServiceNOTE: Refer to Fig. 9 for st
Page 19 and 20: Notes30704919
Page 21 and 22: PartsModel 902098, Series AModel 20
Page 23 and 24: PartsModel 208357, Series JInclude
Page 25 and 26: PartsModel 625794, Series AInclude
Page 28: The Graco Standard WarrantyGraco wa

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