ASSEMBLY
TORQUES
AND
SPECIAL
TOOLS
TORQUE
SPECIFICATIONS
FT.-LB.
Center
Main
Bolt
97-102
Connecting
Rod
Bolt
27-29
Cover-Rocker Box 8-10
Cylinder
Head
Bolt
44-46
Exhaust
Manifold
Nuts 13-15 •
Flywheel
Mounting
Screw 65-70
Flywheel
Hub Nut 17-21
Fuel
Pump
Mounting
Screws . 15-20
Gear
Case
Cover . 18-20
Glow
Plug 10-15
Injection
Nozzle
Mounting
Screws 20-21
Injection
Pump
Mounting
Screws 15-16
Intake
Manifold
13-15
Oil
Base
Mounting
Screws 45-50
Oil
Filter
Hand
Tight
+ 1/4 to 1/2
Turn
Oil
Pump
Mounting
Screws 15-20
Rear Bearing Plate 4045
Rocker
Arm
Nut 4-10*
Rocker
Arm
Stud . ... 35-40
Thru-Rotor-Stud
Nut 55-60
*
- This torque is
friction
between the
threads
only
and
locks
the nuts in place. The rocker arm nuts are for
adjusting
valve lash.
CAUTION
Tighten nuts evenly
to
avoid manilold
damage.
Assembly
torques
assure
proper tightness
without
danger of
stripping
threads. If a torque wrench is not available,
estimate the
degree
of tightness. Use
reasonable
force and
a wrench of normal length.
Special Place Bolts do not require lockwashers or
gaskets.
Never
attempt to use a lockwasher
with
these
bolts, it
will
defect their purpose. Check all studs, nuts and screws
often.
Tighten as needed.
SPECIAL
TOOLS AND EQUIPMENT
These
tools are available
from
Onan to aid service and
repair
work.
Crankshaft Gear
Pulling
Ring
420-0275
Diesel
Compression Tester 420-0283
Diesel
Nozzle Tester 420-0184
Diesel
Pintle Nozzle Cleaning
Tool
Set
(Includes
injection
nozzle centering
tool)
. . . 420-0208
Driver,
Front Camshaft Bearing 420-0252
Driver,
Rear Camshaft Bearing 420-0251
Driver,
Center Camshaft Bearing 420-0254
Driver,
Main
Bearing Front and Rear 420-0269
Driver,
Valve
Seat
420-0270
Oil
Seal Guide and
Driver
Rear Front 420-0281
Ridge
Reamer 420-0260
Replacement Blade for 420-0260 420-0261
Valve
Seat
Remover 420-0272
Replacement Blades for 420-0272
4
20-0274