Terex TR60 Maintenance Manual page 43

DESCRIPTION AND OPERATION
Numbers in parentheses refer to Fig. 1.
The function of the power takeoff (PTO), as the name
implies, is to provide the means of mounting and
driving an auxiliary component. The tandem pump for
the body hoist system and disc brake cooling system
is mounted to PTO cover (26) and its input shaft is
meshed with the internal splines in the hub of driven
gear (12). Refer to Section 230-0050, TANDEM
PUMP.
The major components of the PTO assembly are;
flywheel cover case (1), PTO cover (26), driveshaft (15),
drive gear (14) and driven gear (12).
As driveshaft (15) is driven by the engine crankcase,
drive gear (14) turns to drive driven gear (12). The
tandem pump driveshaft, meshed in the hub of driven
gear (12), turns with driven gear (12) to operate the
tandem pump which, in turn, supplies hydraulic oil to
the body hoist system and cooling oil to the disc
brake assemblies. Refer to Section 230-0050,
TANDEM PUMP.
REMOVAL
Numbers in parentheses refer to Fig. 2.
WARNING
To prevent personal injury and property damage,
be sure wheel blocks, blocking materials and
lifting equipment are properly secured and of
adequate capacity to do the job safely.
1. Position the vehicle in a level work area, apply the
parking brake and switch off the engine.
2. Turn the steering wheel in both directions to relieve
pressure in the steering system. Block all road
wheels.
3. Disconnect driveline from yoke (22) at the PTO
assembly. Refer to Section 130-0010, FRONT
DRIVELINE.
4. Drain oil from power takeoff housing by removing
drain plug (6) from flywheel cover case (1). Reinstall
drain plug (6) securely.
5. Match mark tandem pump mounting flange and
PTO cover (26) so that the pump can be installed in
the same position at installation.
6. With suitable blocking or lifting equipment, support
SM 1573 Rev 1 1-00
ENGINE - Power Takeoff
1 - Flywheel Cover Case
5 - Oil Seal
6 - Plug
9 - Oil Seal
10 - Bearing
11 - Bearing
Fig. 1 - Cutaway View of Power Takeoff Assembly
the pump before loosening attaching nuts. Remove
nuts and lockwashers from pump mounting studs and
secure pump clear of the PTO assembly.
7. Match mark engine flywheel housing and flywheel
cover case (1) so that the PTO assembly can be
installed in the same position at 'Installation'.
8. Attach a suitable lifting device to the PTO
assembly and remove bolts (23 & 25) and
lockwashers (24) securing PTO assembly to the
engine flywheel housing. Carefully lower PTO
assembly and spacer (27) from the flywheel housing
and move to a clean work area for disassembly.
9. Remove spacer (27) from the PTO assembly.
DISASSEMBLY
Numbers in parentheses refer to Fig. 2.
1. Remove locknut (16) and hardened washer (19)
from driveshaft (15). Pull yoke (22) from driveshaft (15).
Section 110-0130
SM - 1361
12 - Driven Gear
14 - Drive Gear
15 - Driveshaft
17 - Snap Ring
18 - Gasket
26 - PTO Cover
1