B&M 40263 SHIFT IMPROVER KIT - Manual (Page 10)

This procedure requires raising the vehicle to give access
to the linkage components at the transmission TV control
lever.
3.1Set carburetor at its minimum idle stop as described in
steps 1-3. Place shift lever in NEUTRAL and set parking
brake. Turn engine off.
3.2 Set the carburetor linkage lever adjustment screw at
approximately half-travel.
3.3 If a new TV control rod assembly is being installed,
connect the rod to the linkage lever at the carburetor.
CAUTION: The following steps involve working in
close proximity to the exhaust system. Allow the
exhaust system to cool before proceeding.
3.4Raise vehicle so there is at least 2 feet ground clearance
for ease of access. MAKE SURE THE VEHICLE IS
RIGIDLY SUPPORTED ON JACK STANDS OR WHEEL
RAMPS IF A HOIST IS NOT AVAILABLE. DO NOT
USE JACKS ALONE TO SUPPORT VEHICLE.
3.5Loosen the bolt on the sliding trunnion block on the TV
control rod assembly. Remove corrosion and road grime
from the control rod and free-up the trunnion block so that
it slides freely on the control rod.
3.6Push up on the lower end of the control rod to ensure that
the linkage lever at carburetor is touching firmly against
the throttle lever. Release force on rod. Rod must stay up.
3.7Push the TV control lever on the transmission up against
its internal stop with a firm force, approximately 22 N (5
lbs). Tighten the bolt on the trunnion block. Do not relax
force on lever until bolt is tightened.
3.8Lower the vehicle and verify that the throttle lever is still
against the minimum idle stop or throttle solenoid posi-
tioner stop. If not, repeat Steps 14 and 15.
4 Rod type Linkage Adjustment Using TV Control
Pressure
Note: This procedure requires the use of TV Pressure
Gauge with Hose (0-60 psi) T86L-70002-A or equivalent.
The results of the adjustment procedure depends on the
accuracy of the pressure gauge.
The following procedure may be used to check and/or
adjust the throttle valve (TV) control linkage using the TV
control pressure. (See Fig. 10.)
4.1Check/adjust the engine curb idle speed to specification
required. Refer to the Engine/Emissions Diagnosis
manual for appropriate procedure. Ensure the curb idle
speed is set to specification with and without the throttle
solenoid positioner (anti-diesel solenoid) energized, if so
equipped.
4.2Attach Pressure Gauge (0-60 psi) with Hose T86L-
70002-A and Adapter Fitting D80L-77001-A or equiva-
lent, to the TV port on the transmission. The pressure
gauge should have 2.4m (8 feet) of flexible hose to make
the gauge accessible while operating the engine.
4.3Obtain TV Control Pressure Gauge Block D84P-70332-
A or fabricate a block .394" ± 0.007") thick. The following
drill bit shanks may also be used in order of preference:
Letter X (.397 inch), 10mm (.3937 inch) or 25/64 (.3906
inch).
4.4Operate the engine until normal operating temperature is
10
reached and the throttle lever is off fast idle. The
transmission fluid temperature should be approximately
38
o - 72 o C (100 o - 150 o F). Do not make pressure check
if transmission fluid is cold or too hot to touch.
4.5Set parking brake, place shift selector in NEUTRAL,
remove air cleaner and shut off air conditioner. If
equipped with a vacuum operated throttle modulator,
disconnect and plug the vacuum line to this unit. If
equipped with a throttle solenoid positioner or an idle
speed control, do not disconnect either of these compo-
nents.
NOTE: The following pressure check must be made with the
engine idling at normal curb idle in NEUTRAL, parking
brake set and with no accessory load on engine. Do not
make pressure check in PARK.
4.6With engine idling in NEUTRAL, insert gauge block or
drill shank between the carburetor throttle lever and
adjust screw on the transmission linkage lever. The TV
pressure should be between 207 and 276 kPa (30 and 40
psi). For best transmission function, use the adjusting
screw to set the pressure as close as possible to 227 kPa
(33 psi). Since the TV pressure goes up approximately
14 kPa (2 psi) when the shift lever is moved from
NEUTRAL to a forward gear, this will result in a TV
Figure 10