Giant operating instructions Repair Instructions HR2527A/HR3025/HR3030, As necessary

REPAIR INSTRUCTIONS - HR2527A/HR3025/HR3030

NOTE: Always take time to lubricate all metal and nonmetal parts with a light film of oil before reassembly. This step will ensure proper fit, at the same time protecting the pump's nonmetal parts (elastomers) from cutting and scoring.

1.With a 19mm socket wrench, remove the three discharge valve plugs (34). Inspect the valve plug o-rings (56) for wear, and replace as neces- sary. Remove the valve spring (18) and valve cone (19) from the manifold (28). Inspect the parts for wear and replace as necessary.

2.With a 19mm crescent wrench, remove the adjusting screw as- sembly (50, 56, 47, and 59). Unscrew the adjusting screw

(59)from the adjusting screw plug (50).

3.With a crescent wrench, remove the injector retainer (76).

36

63

62

64

4.Inspect the o-ring (36) for wear and replace as necessary. Remove the kickback valve spring (64), kickback valve cone (63), and the o-ring (62) from the manifold (28). Inspect and clean the siphon injector and ball clean parts for wear and replace as necessary.

49 51 52 59 47 56 58

5.Inspect the o-rings (56 and 47) for wear and replace as necessary. Remove the adjusting spring (52), washer (51) and by pass valve ball (49) from the manifold (28). Inspect the parts for wear and replace

as necessary.

6.Next, remove the three manifold stud nuts (39) with a 17mm wrench. Remove the suction flange (37) and flange o-ring (38). Inspect the o-ring for wear and replace as necessary.

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