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Introduction, service instructions, and contact details for Braden winch support.
Decodes the components and significance of the Braden H20R winch model numbering system.
Details safety callouts and critical precautions for safe winch operation and maintenance.
Description of the four main component parts and the three basic assemblies of the drum.
Explanation of how the hydraulic motor and planetary gears drive the winch drum.
Description of the dynamic and static brake systems, including their respective parts.
How the static brake and brake clutch engage and disengage to hold and control loads.
Mechanism by which the brake valve modulates oil flow to control load lowering speed.
Requirements for winch mounting, including drum centerline, surface rigidity, and fleet angle.
Guidelines for hydraulic lines, motor drain, control valve type, and hydraulic oil selection.
Details on weight, gear ratio, drum dimensions, and cable storage capacity.
Torque values for Grade 5 and Grade 8 bolts, considering dry and lubricated conditions.
Procedure for installing wire rope using the set screw anchor and critical safety warnings.
Inspection intervals and requirements based on hoist usage categories (Idled to Severe Duty).
Checks for oil leaks, fittings, fasteners, wire rope, safety devices, and warm-up procedure.
Includes pre-use checks, lubricant sampling, brake testing, and fastener tightening.
Covers annual checks and the procedure for changing hoist gear cavity lubricating oil.
Instructions for draining, refilling, and analyzing winch gear oil, including reel-in tension.
Recommendations for planetary hoist gear oil based on ambient temperature and viscosity for brake performance.
Addresses problems with counterbalance valve, brake cylinder seals, or friction brake discs.
Diagnoses oil leaks from brake cylinder or motor seals caused by back pressure or contamination.
Identifies causes of brake failure such as system back pressure, worn discs, or clutch slippage.
Covers issues related to mounting, relief valve setting, oil temperature, or rigging efficiency.
Addresses causes of winch overheating, including high oil temperature and internal wear.
Discusses causes of chattering, such as low oil flow or rapid control operation.
Covers issues affecting smooth wire rope spooling, like mounting, fleet angle, or rope lay.
Procedure for draining oil, removing hoses, motor, and brake cylinder assembly.
Steps for removing brake clutch, tie plates, drum closure, and planet carriers.
Instructions for removing output sun gear, planet carrier, and the cable drum for inspection.
Steps for disassembling the output planet carrier, removing gears, bearings, and inspecting parts.
Procedure for reassembling the output planet carrier with its components and securing pins.
Focuses on inserting bearings, spacers, thrust washers, and securing with roll pins in the output carrier.
Notes on servicing the primary planet carrier, highlighting differences from the output carrier.
Steps for dismantling the brake cylinder and inspecting friction discs, separator discs, and seals.
Guidance on cleaning and inspecting sealing surfaces, ports, and discs for wear or damage.
Procedure for measuring brake springs and assembling the disc stack with correct clearance.
Steps for installing o-rings, seals, piston, springs, and pressure plate into the brake cylinder.
Procedure for testing brake cylinder pressure integrity using a hand pump and gauge.
Steps for installing the brake clutch assembly and ensuring alignment before final cylinder assembly.
Instructions for removing snap rings, retainers, inner race, and inspecting sprag clutch components.
Procedure for pressing bushings into the outer race and assembling the sprag clutch components.
Steps for installing the second bushing and snap ring onto the inner race of the brake clutch.
Importance of proper snap ring seating and alignment for brake clutch functionality.
Procedures for installing new drum bearings, seals, o-rings, and the drum bearing support.
Steps for installing sun gears and planet carriers, ensuring correct engagement with ring and torque gears.
Instructions for mounting the brake cylinder and motor, securing with capscrews and checking torque.
Adding gear oil to the winch and verifying all fasteners and fittings are torqued correctly.
Visual diagram of Braden H20R winch with numbered components for reference.
Detailed list of all winch components, including item number, quantity, and description.
Exploded view and parts list for the sprag clutch assembly, showing outer race, inner race, and bearings.
Exploded view and parts list for the brake cylinder, detailing discs, seals, springs, and pressure plate.
Exploded view and parts list for the primary planet carrier, including gears, bearings, and thrust washers.
Exploded view and parts list for the output planet carrier, showing gears, bearings, spacers, and thrust washers.
Table providing conversion factors for linear, area, volume, mass, pressure, power, torque, velocity, and temperature.
General| Brand | Paccar Winch |
|---|---|
| Model | BRADEN H20R |
| Category | Winches |
| Language | English |
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