JLG 4394RT Service Manual - Manual (Page 152)

SECTION 3 - CHASSIS, PLATFORM & SCISSOR ARMS
3-116 – JLG Lift – 3121249
Coolant Hose Replacement
REMOVAL:
1. Drain the coolant into an appropriate container.
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 SPEC-
IFIED 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.
Engine Control Module Replacement
REMOVAL:
1. Disconnect Negative battery cable.
2. Remove controller from mounting bracket.
3. Push connector lock back to unlock connector.
4. Unplug controller and remove.
INSTALLATION:
THE CONTROLLER IS CALIBRATED FOR EACH ENGINE. VERIFY
YOU HAVE THE CORRECT CONTROLLER
1. Plug connector into controller.
2. Push lock into place.
3. Mount controller into mounting bracket.
4. Reconnect battery cable.
5. Start engine.
6. Check for any DTC codes and clear.
7. Verify engine is in closed loop and no warning lights
are illuminated.
Heated Exhaust Gas Oxygen Sensor
Replacement
REMOVAL:
1. Disconnect Negative battery cable.
2. Disconnect the O2 sensor electrical connector.
3. Using an O2 Sensor socket, remove the O2 Sensor
and discard.
INSTALLATION:
BEFORE INSTALLING THE O2 SENSOR, LUBRICATE THREADS
WITH ANTI-SEIZE COMPOUND GM P/N 5613695 OR EQUIVALENT.
AVOID GETTING COMPOUND ON THE SENSOR TIP.
1. Install O2 sensor. Tighten to 30 lb-ft (41 Nm).
2. Start engine.
3. Check for any DTC codes and clear.
4. Verify engine is in closed loop and no warning lights
are illuminated.