Mixer Replacement; Coolant Hose Replacement; Vapor Hose Replacement - JLG 740A Service And Maintenance Manual

SECTION 3 - CHASSIS & TURNTABLE
4. Place gasket on intake manifold and attach mixer/
throttle assembly to manifold.
Figure 3-84. Mixer Assembly

Mixer Replacement

See Figure 3-84.
REMOVAL
1. Remove the Throttle control device Refer to Elec-
tronic Throttle Body Replacement.
2. Remove the four (4) bolts to the throttle control
device to mixer adapter bolts.
3. Remove and discard the mixer to adapter gasket.
INSTALLATION
COVER THROTTLE BODY ADAPTER OPENING TO PREVENT
DEBRIS FROM ENTERING ENGINE UNTIL REASSEMBLY.
1. Install Mixer to adapter gasket onto the mixer.
2. Install the mixer to the throttle control device to
mixer adapter and secure with the 4 retaining
screws. Tighten 80 lb-in (9 Nm)
3. Install Throttle body. Refer to Electronic Throttle
Control Device Replacement.
4. Start the engine and leak check all fittings and con-
nections.
3-138

Coolant Hose Replacement

REMOVAL
1. Drain the coolant.
2. Using hose clamp pliers, disconnect both hose
clamps on each hose.
3. Remove the hose from each of the fittings.
INSTALLATION
NOTE: Use hose material and lengths specified by JLG.
1. Install the hose clamps to each hose and set the
clamp back on each hose to make installation eas-
ier.
2. Fit the hose to the fittings.
3. Secure by positioning each of the clamps.

Vapor Hose Replacement

REMOVAL
1. Using hose clamp pliers disconnect both hose
clamps.
2. Remove the vapor hose from each fitting.
INSTALLATION
THE VAPOR SUPPLY HOSE IS SPECIFICALLY DESIGNED, DO NOT
USE HOSE MATERIAL OR LENGTH OTHER THAN JLG SPECIFIED
PARTS.
1. Install hose clamps and set back on each hose.
2. Reinstall the vapor hose to each fitting.
3. Reset clamps.
4. Start engine and check for leaks.
– JLG Lift – 3121160