Grove Published 11-22-2016, Control # 345-12 2-9
RT9130E-2 SERVICE MANUAL HYDRAULIC SYSTEM
A gauge on the filter head indicates how restricted (clogged)
the filter element is. When back pressure caused by a dirty
filter element exceeds 40 psi (275 kPa), the filter assembly’s
bypass feature functions to allow hydraulic oil to bypass the
filter element and flow into the reservoir through the bypass
valve instead. For filter replacement instructions, refer to
Filter Maintenance, page 2-12.
Pump Distribution
Pump No. 1
The torque converter drives Pump No. 1.
Section one of pump No. 1 supplies the hoist, lift, and
telescope directional control valve. The valve sections
control the main hoist, boom lift, boom telescope, and, when
equipped, auxiliary hoist functions. Hydraulic oil flowing from
this valve bank returns to the reservoir filter.
FIGURE 2-3
2
1
9
8
7
6
5
4
3
7305
12
11
10
3
Item Description
1 Capscrew
2 Flatwasher
3 Mounting Strap
4
Magnetized Drain Plug (Not shown on bottom of
tank)
5 Fill Cap and Breather
6 Access Cover
7 Filter Indicator
8 Hydraulic Filter
9 Sight Gauge
10 Lockwasher
11 Hex Nut
12 Frame
.
.
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