Manitowoc Grove RT770E - Procedure M - Counterweight Removal Valve

2-29
GROVE
RT770E HYDRAULIC SYSTEM
2
Published 11/26/2014, Control # 447-05
Procedure M - Counterweight Removal Valve
1. Install pressure check diagnostic quick disconnect with
gauge onto test nipple at main directional control valve
load sense relief test port Figure 2-7.
2. With engine at full RPM, retract counterweight cylinder
and set relief valve on counterweight valve Figure 2-15
to 121 bar ±4 (1750 psi ±50); turn in to raise or out to
lower pressure.
3. Remove pressure gauge from main directional valve.
FIGURE 2-15
7532-3
Relief Valve