135 S450 Operation & Maintenance Manual
SERVICE SCHEDULE (CONT’D)
Maintenance Intervals (Cont’d)
Every 50 Hours
• Hydraulic Hoses and Tubelines – Check for damage and leaks. Repair or replace as needed.
• Final Drive Transmission (Chaincase) – Check fluid level and add as needed. (See Page 187.)
• Parking Brake, Foot Pedals, Hand Controls and Steering Levers, or Joysticks – Check for correct operation.
Repair or adjust as needed.
• Wheel Nuts – Check for loose wheel nuts and tighten to correct torque. (See Page 186.)
• Engine / Hydrostatic Drive Belt – Perform at first 50 hours, then as scheduled. Check for wear or damage. Replace
as needed. (See Page 191.)
• Engine Oil and Filter – Perform at first 50 hours, then as scheduled. Replace oil and filter. (See Page 162.)
Every 100 Hours
• Spark Arrester – Empty spark chamber. (See Page 185.)
• Battery – Check cables, connections, and electrolyte level; add distilled water as needed. (See Page 172.)
• Engine Oil and Filter – Perform every 100 hours when operating under severe conditions. Replace oil and filter. (See
Page 162.)
Every 250 Hours or Every 12 Months
• Fuel Filters – Replace filter elements. (See Page 158.)
• Engine / Hydrostatic Drive Belt – Check for wear or damage. Replace as needed. (See Page 191.)
• Drive Belts (Alternator, air conditioning, water pump) – Check condition. Adjust or replace as needed. (See Page
188.) and (See Page 189.)
• Bobcat Interlock Control System (BICS™) – Check the function of the lift arm bypass control. (See Page 137.)
• Engine Oil and Filter – Replace oil and filter. (See Page 162.)
Every 500 Hours or Every 12 Months
• Hydraulic Charge Filter, Hydraulic Reservoir Breather Cap – Replace the charge filter and the reservoir breather
cap. (See Page 181.) and (See Page 184.)
• Heater Coil and Air Conditioning Evaporator (if equipped) - Clean the heater coil and air conditioning evaporator.
Clean the plenum drains. (See Page 152.)
Every 1000 Hours or Every 12 Months
• Hydraulic / Hydrostatic Filter – Replace the hydraulic / hydrostatic filter. (See Page 180.)
• Hydraulic Reservoir – Replace the fluid. (See Page 177.)
• Final Drive Transmission (Chaincase) – Replace the fluid. (See Page 187.)
• Engine Valves – Adjust the engine valve clearance.
Every 24 Months
• Coolant – Replace the coolant. (See Page 168.)
NOTE: The Inspection Checkbook can be ordered for you by your local dealer. Part number 4420300.