JLG 4394RT - Coolant Hose Replacement; Vapor Hose Replacement; Engine Control Module Replacement; Heated Exhaust Gas Oxygen Sensor Replacement

SECTION 3 - CHASSIS, PLATFORM & SCISSOR ARMS
3-82 – JLG Lift – 3121642
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 easier.
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.
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.