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Paccar Gearmatic GH15C Service And Maintenance Manual
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Paccar Gearmatic GH15C Service And Maintenance Manual

Paccar Gearmatic GH15C Service And Maintenance Manual

Equal speed and high speed reverse hydraulic hoist w/6-bolt motor flange
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Summary of Contents for Paccar Gearmatic GH15C

  • Page 1 ® GH15C...
  • Page 2 e following service instructions have been prepared to provide assembly, disassembly, and maintenance information for the Gearmatic Model GH15C standard hoist. It is suggested that before doing any work on these units, all assembly and disassembly instructions should be read an understood. Some illustrations in this manual may show details or attachments that are di erent from your hoist.
  • Page 3 - DESIGNATES GEARMATIC HOIST - EVOLUTIONARY DESIGNATION - SPECIAL ORDER DESIGNATION - TOTAL GEAR REDUCTION (34:1) - MOTOR DISPLACEMENT (5.1 CU. IN/rev) - DRUM OPTION ----...
  • Page 4 Safety for operators and ground personnel is of prime concern. Always take the necessary precautions to ensure safety to others as well as yourself. To ensure safety, the prime mover and hoist must be operated with care and concern for the equipment and a thor- ough knowledge of the machine’s performance capabilities.
  • Page 5 Oil having 150 to 330 SUS viscosity (150 ISO CT) at 100°F e hoist must be mounted with the centerline of the drum (38°C) and viscosity index of 100 or greater will give good in a horizontal position. e mounting plane can be rotated results under normal temperature conditions.
  • Page 6 e hoist has three basic assemblies 1. Primary planetary housing and motor assembly 2. Final planetary housing assembly 3. Drum and Base assembly e hydraulic motor is bolted to the brake cylinder bolted to the primary end bracket. e drum assembly is supported by both end bracket assemblies which receives additional support from the tie plates.

  • Page 7: Hose Requirements

    ROTATION NO SHAFT SEAL IN MOTOR BRAKE RELEASE PORT PLUG HOSE REQUIREMENTS It is necessary to circulate oil through the GH15C Primary Oil Flow GPM Pressure Lines Return Lines Planet housing. is provides cooling for the brake and also (l/min) Inside Dia.
  • Page 8 It is important that the wire rope have the proper tensioning Check to ensure the wedge does not protrude from either end when it is installed on the drum. When the wire rope is rst of the pocket, causing it to interfere with proper spooling of installed, you should operate the hoist, with light to moderate wire rope onto the drum (see gures 9 &...
  • Page 9 e following warnings and instructions are basic to safe hoist operation. Please read them carefully and follow them each time your hoist is operated. ese instructions are provided in addition to any information furnished by the Original Equipment Manufacturer. Equipment operators should be completely familiar with the overall operation of the piece of equipment on which the hoist is mounted (i.e.
  • Page 11 (every 3 months) or monthly in Severe A regular program of preventive maintenance for your plan- Duty Applications or prior to placing the machine in service if etary hoist is required to minimize the need for emergency it has not been used for three months or more. servicing and promote safe, reliable hoist operation.
  • Page 12 e hydraulic oil should be changed whenever the ambient temperature changes signi cantly and an oil from a di erent viscosity range would be more appropriate. Oil viscosity is criti- cal to reliable brake operation. Our tests indicate that excessively heavy or thick oil may contribute to intermittent brake slippage.

  • Page 13: Recommended Fastener Torque

    If a hoist has an unknown history of repair and/or maintenance, the hoist should undergo a tear-down inspection prior to being placed into service. A tear-down inspection of the hoist should include the complete disassembly, cleaning, inspection and replacement of all worn, cracked, corroded or distorted parts such as pins, bearings, sha s and brake components.
  • Page 14 Hoist will not pull maxi- Install a pressure gauge in the hoisting port and apply a stall 1. System relief valve may be set too low. mum load. pull on the hoist. If pressure is low, increase relief valve set- ting until recommended pressure is obtained.
  • Page 15 1. Same as A-2. Same as remedy for A-2. Considerable reduction in line speed. 2. Same as A-4. Same as remedy for A-4. 3. Same as A-6. Same as remedy for A-5 and B-4. 4. If this trouble has increased gradually, the hy- Remove and inspect pump.
  • Page 16 e hoist will not lower e friction brake may not be releasing as a result Check brake piston seals. the load or not lower the of a defective brake piston seal. load smoothly. 2. Friction brake will not release as a result of dam- aged brake disc.
  • Page 22 CAUTION e GH15C weighs approximately 585 lbs (265 kg). Make certain li ing equipment has adequate capacity. Using undersized or poorly maintained li ing equipment may result in a dropped load, property damage injury or death. 1. Remove wire rope from hoist. Drain gear cavity oil by re- moving the oil from the output gear side of the hoist by the drain plug (44).
  • Page 23 6. Remove snap ring (52). 9. Remove the ve steel brake discs (54) four brake friction discs (55). 7. Remove the brake piston (32). Remove and discard brake 10. Remove the ring gear (53) and retaining ring (8). piston o-ring (15), back-up ring (33) and o-ring (34). Re- move brake cylinder (31), o-ring (29), and brake hub (51).
  • Page 24 11. Mark the tie plates to the side of the hoist to ease re-assembly. 1. Remove capscrews (14) and lockwashers (16) securing end Support the end bracket (2) with an overhead hoist. Remove cover (4) to output end bracket (3). Remove cover (4). Re- the top 2 bolts (23) on each tie plates (21-22) and loosen the move and discard o-ring (29).
  • Page 25 CAUTION e GH15C weighs approximately 585 lbs (265 kg). Make certain li ing equipment has adequate capacity. Using undersized or poorly maintained li ing equipment may result in a dropped load, property damage injury or death. 1. Remove wire rope from hoist. Drain cavity oil by removing the oil from the output gear side of the hoist by the drain plug (44).
  • Page 26 6. Remove the brake piston (32). Remove and discard brake piston o-ring (15), back-up ring (33) and o-ring (34). Re- move brake cylinder (31), o-ring (29), and ring gear (501). 9. Remove nine steel brake discs (504) seven brake friction plates (505), and two additional brake spacers (503).
  • Page 27 1. Remove capscrews (14) and lockwashers (16) securing end cover (4) to output end bracket (3). Remove cover (4). Re- move and discard o-ring (29). Remove thrust washer (26) and thrust button (27). 11. Mark the tie plates to the side of the hoist to ease re-assem- bly.
  • Page 28 1. Remove the planet gears by rst driving the roll pins (item 306) into the center of the planet gear sha s Remove the planet sha s, bearings, thrust washers and (item 302). gears. oroughly clean all parts and inspect for damage and wear.
  • Page 29 Install a bearing into a planet gear and place a thrust washer e roll pin is slightly recessed into the carrier when prop- on each side of the gear. Position this assembly into an open- erly installed. With a center punch, stake the carrier next to ing in the carrier.
  • Page 30 Place the output carrier on a clean work surface with the Follow steps 1 and 2 of the Primary Planet Carrier disas- drive pins down. sembly procedure to remove the roll pins from the planet gear sha s. Caution should be used when removing roller Apply a liberal coat of oil soluble grease to a thrust washer bearings;...
  • Page 31 Failure to assemble the over-running clutch assembly with all e polished surfaces of the inner and outer race and the over- running cams must be perfectly smooth to insure positive en- parts oriented correctly may result in reduced brake e ective- ness, which may lead to loss of load control and result in prop- gagement of the clutch.
  • Page 32 1. Assemble Brake, Cable Drum, Overrunning Clutch, and Plan- 11. Install the tie-plates (21) using capscrews (23). Tighten to et Carrier subassemblies following the procedures in the sub- torque chart value. assembly section of this manual. 2. Press ball bearing (9) into output end bracket (3) and install retaining ring (8).

  • Page 33: Metric Conversion Table

    METRIC CONVERSION TABLE English to Metric Metric to English LINEAR inches (in.) X 25.4 = millimeters (mm) millimeters (mm) X 0. 3937 = inches (in.) feet (ft.) X 0.3048 = meters (m) meters (m) X 3.281 = feet (ft.) miles (mi.) X 1.6093 = kilometers (km) kilometers (km)