Grove Published 11-10-2014, Control # 524-00 7-25
RT880E SERVICE MANUAL POWER TRAIN
DRIVE TRAIN
Description
The drive train consists of the transmission/torque converter
assembly and three drive lines (Figure 7-14).
The transmission/torque converter is mounted on and driven
by the engine. The torque converter assembly provides for
mounting and driving the piston and single section hydraulic
pumps. The transmission is a range shift with six forward
speeds and six reverse speeds. The transmission is
controlled electrically by a shift lever/knob located on the
right side of the steering column and an axle drive mode
selector rocker switch located on the left side of the front
console.
The transmission/torque converter oil is cooled by passing
the oil through an externally mounted transmission cooler.
The cooler is located beside the fuel tank. An oil filter is
located on the left side of the frame bottom rail.
Three drive lines are used. Two drive lines are connected
between the transmission/torque converter and the front axle
and the other drive line is connected between the
transmission/torque converter and the rear axle.
Maintenance
Drive Lines
Removal
1. Support the drive line being removed so it does not fall
when disconnected.
2. Remove the bolts from the bearing cap on each end of
the drive line.
3. Remove the drive line.
Installation
1. Position the drive line, install the bearing cap bolts and
tighten bolts securely.
2. Torque the bearing cap bolts 110 to 121 lb-ft (149 to
164 Nm).
Lubrication
The drive line slip joints require lubrication. Refer to
Lubrication, page 9-1.
CAUTION
Do not disassemble drive lines when removing them from
the crane. Dirt can enter the spline and cannot be purged.
In addition, the drive lines are assembled in a specific
orientation when manufactured and can easily be
incorrectly reassembled.
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