Giant service manual GP7132 AND GP7136 REPAIR INSTRUCTIONS

GP7132 AND GP7136 REPAIR INSTRUCTIONS

NOTE: Always take time to lubricate all metal and non-metal parts with a light film of oil before reassembling. This step will help ensure proper fit, at the same time protecting thepumpnon-metalparts (elastomers)fromcutting and scoring.

1. Lossen screws (58C), take	2. Take out complete valve
plugs (58) out of valve cas-	(51) using either tool (part
ing with two screws.	#07662) or stud bolt.

51F	51E 51C		51B	51A	51C or 52C
		or 52C

4.Check surfaces of valve plate, valve seat, O-rings (51B, 58A) and replace worn parts.

6. Loosen nuts (49A) 7. Remove pump head.

3.Valve seats (51C and 52C) are pressed out of spacer pipe (51F) by hitting the valve plate (51D) with a bolt.

PS

5.When reassembling: The suction valve seat (51C) is 1mmsmallerindiameterthan the discharge valve seat (52C). Suction valve seats are marked "S" and always have to be installed first. Dis- charge valve seats are marked "P" and are always tobe installed on top of suc- tion valve. Plugs (58) are to be tensioned down evenly

with screws (58C) and

crosswise at 155 ft-lbs.

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