Installation; Description; Removing Engine From Engine Stand; Engine Installation Into Vehicle - Mack E7 Service Manual

5-101.bk Page 2 Friday, March 17, 2006 11:05 AM
200 ENGINE INSTALLATION & TESTING

INSTALLATION

Description

Engine installation details vary from vehicle to
vehicle. The following procedure provides
general installation guidelines for MACK E7
engines.
It is good practice to steam-clean road grime,
grease, and oil from the engine before service.
Steam-cleaning the engine and engine
compartment permits more detailed inspection
and improved workmanship.
Before beginning, make sure all equipment has
been inspected for safety and is available for use.
Place vehicle on a flat, level surface. Make sure
area has ample work space.
Newly designed torsional idler-gear assemblies
are now available for servicing both 1:1 and 0.7:1
ratio Flywheel Power Take-Off (FWPTO) units in
E7 engines equipped with a T200 series
transmission and FWPTO. New assemblies
feature a two-piece idler gear and torsion spring.
The new torsional idler-gear assembly reduces
spline wear on the FWPTO input (drive) gear. If
the unit is removed for any reason:
Inspect input gear splines for excessive wear.
If splines show excessive wear, disassemble
the FWPTO far enough to gain access to
idler-gear assembly. Refer to MACK Service
Manual 10-901, Flywheel Power Take-Off.
Removing Engine from Engine
Stand
1. Attach a suitable lifting device to lifting points
on engine.
2. Position and attach an engine hoist to lifting
device; place tension on the device by
operating hoist.
3. With lifting device supporting the engine
weight, remove mounting capscrews from
engine stand.
Page 8-2

Engine Installation into Vehicle

Obtain assistance when installing the engine. Be
sure to watch for obstructions such as engine or
chassis components, brackets, clamps or other
components that may interfere with engine
installation.
1. Align engine with torque converter or clutch
(as applicable) and install transmission bell
housing to the flywheel housing capscrews.
Torque to specification.
2. Install engine mount capscrews to secure
engine mounts to engine. Torque to
specification.
3. Remove transmission jack from under
transmission.
4. Install clutch linkage and bracket-retaining
capscrews.
5. Install power-steering hoses and reservoir, if
applicable.
6. Install hood rest crossmember(s), if
applicable.
7. Install exhaust bracket to flywheel housing
and exhaust clamp at turbocharger.
8. Install starter. Connect wiring and cables.
9. Install air cleaner housing, if required.
10. Install all coolant tubes, ground straps, air
lines, fuel lines, hydraulic hoses or tubes,
throttle linkage and electrical wiring
harnesses that were removed from engine
during removal.
On some E7 models, the machined V-band was
replaced with a 3.5-inch push-on turbocharger
discharge connection that is angled forward.
The remaining models use a 3-inch push-on
connection directed 90 degrees outward from
the center line of turbocharger.