AND CHECK VALVE (CV4) REPLACEMENT (Sheet 1 of 4)
12 in. adjustable wrench
TOOLS: l-1/8 in. open end wrench
15 in. adjustable wrench
1-3/8 in. open end wrench
l-1/4 in. open end wrench
Drip pans [suitable containers)
Masking tape (Item 18, Appendix D) Protective caps and plugs
Holding nipple (A) with 1-1/8 inch wrench, use 1-1/4 inch wrench to disconnect hose
assembly "CH" (B) from nipple (A).
Holding elbow (C) with 15 inch adjustable wrench, use 1-1/4 inch wrench to remove hose
assembly "CK1" (D) from elbow (C).
Using 1-1/8 inch wrench, remove nipple (E) and attached parts as an assembly from relief
valve "RV4" (G).
Holding check valve "CV4" (F) with 1-3/8 inch wrench, use 15 inch adjustable wrench to
remove relief valve "RV4" (G) from check valve "CV4" (F).
Using 1-1/8 inch wrench, remove nipple (H) and its attached parts as an assembly from
tongue cylinder (J).
Go on to Sheet 2