TM 5-3810-300-24&P-3
14.14
SUPPLEMENTARY GOVERNING DEVICE ADJUSTMENT
ENDINE LOAD LIMIT DEVI E
75-85 Ib-ft torque (all other rocker arm shaft bracket
bolts are tightened to 90-100 lb-ft torque). Then adjust
the load limit device as follows:
1
Loosen the load limit screw lock nut and remove the
screw.
2
Loosen the-load limit lever clamp bolts so the lever
is free to turn on the injector rack control tube.
3
With the screw out of the plate, adjust the load limit
screw lock nut so the bottom of the lock nut is 1
3/4" from the bottom of the load limit screw (Fig
I) for the initial setting.
4
Thread the load limit screw into the adjusting screw
plate until the lock nut bottoms against the top of
the plate.
5
Hold the injector rack control tube in the full-fuel
position and place the load limit lever against the
bottom of the load limit screw
Then tighten the
load limit lever clamp bolts.
Fig. 1 - Engine Load Limit Device
6
Check to ensure that the injector racks will just go
into the full-fuel position -readjust the load limit lever
Engines with mechanical governors may be equipped
if necessary.
with a load limit device (Fig. 1) to reduce the maximum
horsepower.
7
Hold the load limit screw to keep it from turning,
then set the lock nut until the distance between the
This device consists of a load limit screw threaded into a
bottom of the lock nut and the top of the adjusting
plate mounted between two adjacent rocker arm shaft
screw plate corresponds to the dimension (or
brackets and a load limit lever clamped to the injector
number of turns) stamped on the plate. Each full
control tube.
turn of the screw equals .042", or .007" for each flat
on the hexagon head.
The load limit device is located between the No. I and
No. 2 cylinders of a three cylinder engine, between the
NOTE: If the plate is not stamped,
No. 2 and No. 3 cylinders of a four cylinder engine or
adjust the load limit screw while
between the No. 3 and No. 4 cylinders of a six cylinder
operating the engine on a dynamometer
engine.
test stand and note the number of turns
required
to
obtain
the
desired
When properly adjusted for the maximum horsepower
Then stamp the plate
desired, this device limits the travel of the injector control
accordingly.
racks and thereby the fuel output of the injectors.
8
Thread the load limit screw into the plate until the
Adjustment
lock nut bottoms against the top of the plate. Be
sure the nut turns with the screw.
After the engine tune-up is completed, make sure the
load limit device is properly installed as shown in Fig. 1.
9
Hold the load limit screw to keep it from turning,
Make sure the counterbores in the adjusting screw plate
then tighten the lock nut to secure the setting.
are up. The rocker arm shaft bracket bolts which fasten
the adjusting screw plate to the brackets are tightened to
Page 411
