GENERAL / Component Layout CONTROL VALVE ZW220 5 4 1 2 3 T4GB-01-02-027 ZW250 5 1 4 3 2 T4GB-03-02-002 1 - Over Load Relief Valve (Lift Arm: Bottom) 3 - Over Load Relief Valve (Bucket: Rod) 4 - Make-up Valve (Lift Arm: Rod) 5 - Main Relief Valve 2 - Over Load Relief Valve (Bucket: Bottom) T1-2-12