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Paccar Braden PD12C - User Manual

Paccar Braden PD12C
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800 East Dallas | Broken Arrow, OK 74012
www.paccarwinch.com | 918.251.8511
LIT2935_03-2024 (CPR) ©2024 PACCAR Inc
MADE IN THE
PD12C and PD15B
Parts and Service Manual
PD12C AND PD15B
HYDRAULIC PLANETARY HOISTS
Visit www.paccarwinch.com for the most up-to-date product and service information.
Technical publications for most PACCAR Winch products are available for download.
First 2 numbers indicate year of manufacture
(for serial number location, see page 3).
Record serial number below:

Table of Contents

Other manuals for Paccar Braden PD12C

Preview: Installation Maintenance And Service Manual
Installation Maintenance And Service Manual40 pages

Questions and Answers

  • A
    annsmithAug 14, 2025
    Why is my Paccar Winches running hot?
    • R
      Robert GrahamAug 14, 2025
      Your Paccar Winches may be running hot due to several reasons: a plugged heat exchanger (clean the exterior and flush the interior), incorrect hydraulic reservoir oil level (adjust to the correct level), an inefficient hydraulic pump (tune/adjust the prime mover; check the suction line for damage; tighten or replace slipping belts; or replace the pump if worn), or excessively worn or damaged internal parts (disassemble the hoist to inspect/replace worn parts). Also, ensure the hydraulic system temperature does not exceed 180°F.
  • A
    Anna BullockAug 17, 2025
    What to do if my Paccar Winches will not hoist the rated load?
    • C
      Cynthia VasquezAug 17, 2025
      If your Paccar Winches won't hoist the rated load, several factors could be the cause. The hoist may be mounted on an uneven or flexible surface, causing distortion, in which case you should level the hoist using shims and retighten mounting bolts. The system relief valve may be set too low; check the relief pressure against specifications and adjust as needed, noting that a contaminated or worn relief valve may require disassembly or replacement. Ensure the hydraulic system temperature is not more than 180 degrees F. Also, the hoist line pull rating is based on the first layer of wire rope, so consult the hoist performance charts. Finally, inefficient rigging and sheaves can be a factor, so perform rigging service as recommended by the crane manufacturer.
  • M
    Martin NewmanAug 20, 2025
    Why won't the brake hold a load on my Paccar Winches when in neutral?
    • C
      Casey WolfeAug 20, 2025
      If the brake on your Paccar Winches won't hold a load in neutral, it could be due to excessive system back pressure acting on the brake release port. The friction brake may not hold due to worn or damaged brake discs. Also, the brake clutch might be slipping, which can be caused by improper planetary gear oil (drain the old oil, flush with solvent, and refill with the recommended oil) or damaged/worn components (disassemble and inspect the brake clutch).
  • M
    Michael MccoyAug 25, 2025
    How to fix a Paccar Winches that won't lower smoothly?
    • M
      Matthew DayAug 25, 2025
      If your Paccar Winches won't lower the load smoothly, the issue could stem from a plugged or loose pilot orifice. Remove the pilot hose and fitting from the brake valve, then use a 5/32 inch Allen wrench to remove the pilot orifice for inspection. A defective brake cylinder seal can also cause this; disconnect the swivel tee, connect a hand pump with a gauge to the brake release port, apply 1000 PSI, close the shut-off valve, and observe for five minutes to see if there's any pressure loss, which would indicate a need to disassemble the brake cylinder for seal inspection and replacement. Damaged brake discs can also prevent smooth lowering; disassemble the brake to inspect them and check the stack-up height.
  • B
    bbrooksAug 27, 2025
    What to do if Paccar Winches chatters when lifting?
    • T
      Taylor ColeAug 27, 2025
      If your Paccar Winches chatters while raising the rated load, it could be due to the same cause as PROBABLE CAUSE D2. Also, the hydraulic oil flow to the motor may be too low. Another potential cause is operating the controls too quickly; operator training may be required.
  • E
    Elizabeth SandersAug 31, 2025
    Why is oil leaking from the vent plug of my Paccar Winches?
    • K
      Kenneth LawrenceAug 31, 2025
      Oil leaking from the vent plug of your Paccar Winches may be due to the same cause as PROBABLE CAUSE A2. The motor seal may be defective due to high system back pressure or contaminated oil. Ensure system back pressure does not exceed 150 PSI (1,035 kPa), inspect the hydraulic system for return line restrictions, and verify proper sizing of the control valve and plumbing. Perform an oil analysis to check for contamination, thoroughly flush the hydraulic system, install new filters and oil, and replace the motor seal.
  • J
    Justin ChapmanSep 3, 2025
    How to make wire rope spool smoothly on Paccar Winches?
    • B
      Brittany BurnsSep 3, 2025
      To ensure the wire rope spools smoothly on the drum of your Paccar Winches, check the mounting distance and fleet angle to ensure the hoist is not too close to the main sheave (causing a fleet angle greater than 1-1/2 degrees); reposition the hoist if needed. It's also important to verify that the hoist is mounted perpendicular to an imaginary line between the center of the cable drum and the first sheave. Also, consider that the wrong lay rope could be in use, so consult a wire rope manufacturer for a suitable recommendation. If the hoist has been overloaded, causing permanent set in the wire rope, replace the wire rope and provide operator/rigger training.
  • J
    James AdamsSep 6, 2025
    Why is my Paccar Industrial Equipment leaking oil from the vent plug?
    • N
      Nicholas RileySep 6, 2025
      If oil is leaking from the vent plug of your Paccar Industrial Equipment, it could be due to a defective motor seal caused by high system back pressure or contaminated oil. Ensure the hydraulic system back pressure doesn't exceed 100 PSI (6.9 bar) and inspect the hydraulic system for any restrictions in the return line from the control valve to the reservoir. Also, thoroughly flush the entire hydraulic system and install new filters and oil. Then, install a new motor seal.
  • T
    Tracey WattsSep 9, 2025
    How to fix a Paccar Braden PD12C hoist that won't lower?
    • A
      Arthur HollowaySep 9, 2025
      If the Paccar Industrial Equipment hoist isn't lowering at all, a plugged or loose pilot orifice could be the problem. Remove the pilot hose and fitting from the brake valve, then use a 5/32 inch Allen wrench to remove the pilot orifice. Clean and install the pilot orifice tightly in the brake valve. Another potential cause is that the friction brake may not be releasing due to a defective brake cylinder seal. Check the brake cylinder seal by disconnecting the swivel tee from the brake release port. Connect a hand pump with an accurate 0-2000 PSI gauge and shut-off valve to the –4 JIC fitting in the brake release port. If the friction brake is still not releasing, the brake discs may be damaged. Disassemble the brake to inspect the brake discs.

Summary

Foreword

Planetary Hoist Model Number Explanation

Explains the meaning of numbers and letters in the BRADEN planetary hoist model nomenclature.

General Safety Recommendations

Theory of Operation

Description of Hoist

Details the four basic component parts of the hoist and drum assembly.

Hoist Operation

Explains how the hydraulic motor drives the hoist through planetary gear sets.

Dual Brake System - Description

Describes the dynamic and static brake systems of the hoist.

Dual Brake System - Operation

Explains the operation of the dual brake system during hoisting and lowering.

Hoist Installation

Recommended Fastener Torque

Wire and Synthetic Rope Installation

Two-Speed Motor Case Drain Plumbing

Preventive Maintenance

Oil Level

Instructions for checking external oil leaks and the oil level via sight glass.

Oil Change Procedure

Details the procedure and importance of changing gear oil at specified intervals.

Vent Plug

Importance of keeping the vent plug clean and unobstructed for proper operation.

Hydraulic System

Guidelines for filter replacement in the hydraulic system.

Wire Rope

Instructions for inspecting the wire rope according to manufacturer recommendations.

Mounting Bolts

Procedure for tightening hoist base mounting bolts at specified intervals.

Warm-Up Procedures

Recommended procedure for warming up the hoist, especially in cold weather.

Inspection

Refers to sections for inspecting bearings, gears, brake cylinder, and brake clutch.

Recommended Planetary Gear Oil

Guidance on selecting and using proper gear oil for hoist longevity and safety.

Recommended Gear Oil

Troubleshooting

Hoist Not Lowering Smoothly

Addresses issues with plugged orifices, defective seals, or damaged brake discs.

Oil Leaks From Vent Plug

Covers causes and remedies for oil leaks from the vent plug.

Brake Will Not Hold Load

Addresses issues with excessive back pressure, worn discs, or slipping brake clutch.

Hoist Will Not Hoist Rated Load

Covers mounting issues, relief valve settings, and system temperature.

Hoist Runs Hot

Discusses causes for overheating, like plugged heat exchanger or pump issues.

Hoist Chatters

Addresses low oil flow, fast controls, or other issues causing chatter.

Wire Rope Spooling Issues

Covers fleet angle, mounting, and rope lay issues affecting smooth spooling.

Service Kits

Hoist Disassembly

Service Precautions

Essential guidelines for safe and clean disassembly of the hoist.

Main Assembly Components

Base Configurations

Common Base Parts

Lists common parts associated with base configurations.

Cast Base

Details components specific to the cast base configuration.

Fabricated Base

Details components specific to the fabricated base configuration by drum option code.

Special Drum Code 06 Components (PD15 B Only)

Drum Rotation to Hoist (04 & 05 Drum;Base Shown)

Overrunning Clutch Components

Brake Clutch Rotation

Complete Brake Clutch Assemblies

Brake Cylinder Assembly

Planet Carrier Assemblies (PD12 C Only)

Primary Planet Carrier Assembly

Exploded view and parts list for the primary planet carrier.

Output Planet Carrier Assembly

Exploded view and parts list for the output planet carrier.

Planet Carrier Assemblies (PD15 B Only)

Primary Planet Carrier Assembly

Exploded view and parts list for the primary planet carrier for PD15B.

Output Planet Carrier Assembly

Exploded view and parts list for the output planet carrier for PD15B.

Motor Groups (Standard)

Motor Groups (-1 Option, Personnel Handling)

Brake Valve Assembly

Fasteners, Adapters, and Hose Assemblies

Fittings

Planet Carrier Service

Output Planet Carrier Disassembly

Step-by-step procedure for disassembling the output planet carrier.

Assembly

Step-by-step procedure for assembling the output planet carrier.

Primary Planet Carrier

Procedure for servicing the primary planet carrier.

Motor Support - Brake Cylinder Service

Disassembly

Details disassembly of the motor support and brake cylinder.

Clean and Inspect

Instructions for cleaning and inspecting brake cylinder and motor support parts.

Assembly

Steps for assembling the motor support and brake cylinder.

Brake Cylinder Pressure Test

Procedure for testing brake cylinder pressure to ensure proper function.

Brake Clutch Service

Disassembly

Step-by-step guide for disassembling the brake clutch assembly.

Assembly

Step-by-step guide for assembling the brake clutch assembly.

Hoist Assembly

Brake Valve Service

Disassembly

Step-by-step guide for disassembling the brake valve.

Clean and Inspect

Procedures for cleaning and inspecting brake valve components.

Assembly

Steps for reassembling the brake valve.

Reversing Direction of Drum Rotation

Paccar Braden PD12C Specifications

General IconGeneral
ModelPD12C
ManufacturerPaccar Braden
CategoryIndustrial Equipment
TypeWinch
Rated Capacity12, 000 lbs
Line Pull12, 000 lbs

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