Service Manual User Manual
Table Of Contents
- Service & Maintenance Manual
- Section A. Introduction - Maintenance Safety Precautions
- Section 1. Specifications
- 1.1 Capacities
- 1.2 Component Data
- 1.3 Performance Data
- Travel Speed
- Gradeability
- Turning Radius (Outside)
- Lift Speed - 400RTS
- Lift Speed - 500RTS
- Platform Capacity - Fixed Platform
- Platform Capacity - Traversing Platform Extension (If Equipped)
- Platform Capacity - Wide Deck, Dual Extensions (500RTS Only)
- Machine Weight
- Machine Height (Platform Lowered)
- Machine Length
- Machine Width
- 1.4 Lubrication
- 1.5 Lubrication Specifications
- 1.6 Pressure Settings
- 1.7 Limit Switches
- 1.8 Serial Number Locations
- 1.9 Cylinder Specifications
- 1.10 Major Component Weights
- 1.11 Critical Stability Weights
- Section 2. Procedures
- 2.1 General
- 2.2 Servicing and Maintenance Guidelines
- 2.3 Lubrication Information
- 2.4 Cylinders - Theory of Operation
- 2.5 Valves - Theory of Operation
- 2.6 Component Functional Description
- 2.7 Sliding Wear Pads
- 2.8 Pump Coupling Lubrication
- 2.9 Cylinder Checking Procedures
- 2.10 Cylinder Removal and Installation
- 2.11 Cylinder Repair
- 2.12 Tilt Alarm Switch
- 2.13 Pressure Setting Procedures - (400RTS)
- 2.14 Pressure Setting Procedures - (500RTS)
- 2.15 Drive Pump Start-up Procedure
- 2.16 Throttle Checks and Adjustments - Ford Engine
- 2.17 Throttle Checks and Adjustments - Deutz F3L1011
- 2.18 Oscillating Axle Lockout Cylinder Bleeding Procedure - (If Equipped)
- 2.19 Lockout Cylinder Check
- 2.20 Piston Drive Motor - 2WD & 4WD
- 2.21 Drive Torque Hub - 2WD/4WD Rear
- 2.22 Drive Torque Hub/Brake - 4WD Front
- 2.23 Drive Brake - 2WD/4WD Rear
- 2.24 Spark Arrestor Muffler
- 2.25 Dual Fuel/LPG System
- 2.26 Freewheeling Feature
- 2.27 Limit Switch Adjustment Procedure
- 2.28 Preventive Maintenance and Inspection Schedule
- Section 3. Troubleshooting

SECTION 1 - SPECIFICATIONS
3120696 – JLG Sizzor – 1-3
than Mobil 424 is desired, contact JLG Industries for
proper recommendations.
1.5 LUBRICATION SPECIFICATIONS
NOTE: Refer to Figure 1-2 for specific lubrication proce-
dures.
1.6 PRESSURE SETTINGS
NOTE: All pressures are given in pounds per square inch
(psi), with the metric equivalent, bar, in parentheses.
400RTS
Rexroth/Hydraforce Valve
Main Relief - 2250 psi (156 bar)
Steer Relief - 1500 psi (103 bar)
Steer Relief 4-W/S (If Equipped) - 1500 psi (103 bar)
Platform Extension (If Equipped) - 500 psi (34 bar)
500RTS
Rexroth/Hydraforce Valve
Main Relief - 2800 psi (193 bar)
Steer Relief - 1500 psi (103 bar)
Steer Relief 4-W/S (If Equipped) - 1500 psi (103 bar)
Platform Extension (If Equipped) - 500 psi (34 bar)
1.7 LIMIT SWITCHES
The machine is equipped with the following limit switches:
High Drive Speed Cut-Out
High drive speed is cut out when platform is raised above
stowed (fully lowered) position.
Lift Cut-Out (If Equipped)
Lift is cut out at 22 ft (6.8 m) when leveling jacks are in the
stowed position.
Drive Cut-Out (If Equipped)
Drive is cut out when platform is at 22 ft (6.8 m) above
stow position, or when leveling jacks are in the set posi-
tion.
400RTS Tilt Alarm - 5 ° (If Equipped)
A horn is sounded and a warning light is illuminated when
the machine is operated on a slope that exceeds 5 ° with
the platform raised. If the machine is operated on a 5 °
slope with the platform completely lowered, only the warn-
ing light is illuminated.
500RTS - Tilt Alarm - 2 °
A horn is sounded and a warning light is illuminated when
the machine is operated on a slope that exceeds 2 ° with
the platform raised. If the machine is operated on a 2 °
slope with the platform completely lowered, only the warn-
ing light is illuminated.
Table 1-2. Lubrication Specifications
KEY SPECIFICATIONS
MPG Multipurpose Grease having a minimum dripping
point of 350 degrees F. Excellent water resistance
and adhesive qualities, and being of extreme pres-
sure type. (Timken OK 40 pounds minimum.)
EPGL Extreme Pressure Gear Lube (oil) meeting API ser-
vice classification GL-5 or MIL-Spec MIL-L-2105.
EO Engine (crankcase) Oil. Gas - API SF/SG class, MIL-
L-2104. Diesel - API CC/CD class, MIL-L-2104B/
MIL-L-2104C.
HO Hydraulic Oil. API service classification GL-3, e.g.
Mobil 424.