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Grove
Published 01-14-2021 Control # 707-01
7-1
TMS9000-2 SERVICE MANUAL
POWER TRAIN
7
SECTION 7
POWER TRAIN
SECTION CONTENTS
Engine . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-1
Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-1
Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-2
Removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-2
Installation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-4
Engine Drive Belts . . . . . . . . . . . . . . . . . . . . . . . . 7-4
Engine Control System . . . . . . . . . . . . . . . . . . . . . 7-5
Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-5
Functional Operation . . . . . . . . . . . . . . . . . . . . . . 7-5
Engine Control System Switches and
Indicator Lights . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-6
Fuel System. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-6
Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-6
Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-7
Air Intake System . . . . . . . . . . . . . . . . . . . . . . . . . . 7-8
Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-8
Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-9
Exhaust System . . . . . . . . . . . . . . . . . . . . . . . . . . 7-11
Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-11
Exhaust System Removal. . . . . . . . . . . . . . . . . . 7-11
System Installation . . . . . . . . . . . . . . . . . . . . . . . 7-11
Slip Joint Exhaust Connectors . . . . . . . . . . . . . . 7-12
Exhaust System . . . . . . . . . . . . . . . . . . . . . . . . . 7-12
After-Treatment Diesel Exhaust Fluid (DEF) . . . 7-13
DEF Tank . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-13
DEF Dosing Unit Filter . . . . . . . . . . . . . . . . . . . . 7-14
Water Cooling System . . . . . . . . . . . . . . . . . . . . . 7-16
Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-16
Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-16
Cleaning. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-18
Component Inspection. . . . . . . . . . . . . . . . . . . . . 7-19
Radiator Assembly Removal and Installation . . . 7-20
Drive Train . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-22
Description. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-22
Maintenance. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-22
Drive Lines. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-22
Clutch . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-24
Description. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-24
Theory Of Operation . . . . . . . . . . . . . . . . . . . . . . 7-24
Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-26
Clutch Adjustment Procedure . . . . . . . . . . . . . . . 7-33
General Maintenance . . . . . . . . . . . . . . . . . . . . . 7-33
Gearshift. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-33
Description. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-33
Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-34
Manual Transmission . . . . . . . . . . . . . . . . . . . . . . 7-34
Description. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-34
Theory of Operation. . . . . . . . . . . . . . . . . . . . . . . 7-34
Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-35
Lubrication . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-38
Preventive Maintenance . . . . . . . . . . . . . . . . . . . 7-39
Transmission Shift Air System . . . . . . . . . . . . . . 7-39
Pump / PTO Assembly . . . . . . . . . . . . . . . . . . . . . 7-40
Pump / PTO Replacement. . . . . . . . . . . . . . . . . . 7-40
ENGINE
Description
The engine is a Cummins X12 on-highway engine.
This Service Manual does not include detailed information
on this individual engine. A separate manual, as prepared in
detail by the engine manufacturer, is supplied with this
S e r v i c e M a n u a l
. However, a short description and
maintenance of certain components of the fuel system, air
intake system, and water cooling system are provided in this
section.
Engine speed is controlled from the carrier cab by a foot
throttle pedal connected electronically to the engine ECM.
Speed is electronically controlled in the same manner from
the superstructure cab by either a foot throttle pedal or hand
throttle. The control module is the control center of the
system. It processes all of the inputs and sends commands
to the vehicle and engine control devices.
The engine and its components are enclosed within a hood
assembly. The hood has openings in the front and rear to
allow for adequate air flow over the engine. A door on the top
left and right side of the hood may be opened to provide
easier access to the engine.