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Air Winch and Hoist
Remanufacture / Overhaul Procedure
Introduction

This document defines the procedures used by Ram Winch and Hoist’s Technicians to evaluate a customer’s base mounted drum hoist, perform the level of service (as defined in this document) requested by our customer and return the unit to service. This document is not intended to alleviate the responsibility of the operator from determining the safe working condition of the equipment at the point of usage. Proper installation of the winch and associated rigging is critical to the overall safe working condition of the lifting system.

Remanufacture / Overhaul

Air Winch Remanufacture / Overhaul consists of the following operations:


Initial visual inspection – The winch is subjected to a visual inspection of the components that can be seen with limited disassembly.


Check conditions of fluids – This step is used to verify if grease and oil levels are at the proper operating levels and if lubricants
show signs of contamination (moisture/dirty/metal particles) or have been run at excessive temperatures.


Function Test – If the winch is capable, the unit will be function tested to further diagnose a potential problem. Excessive motor
noise or blow-by will be noted along with any other abnormal mechanical noise.


Complete Tear Down – The winch is completely disassembled and a full visual inspection of all parts is conducted. All wear parts
are subjected to a dimensional inspection comparing to original manufacturing tolerances.


Estimate – Based on steps 1 thru 4, the items requiring repair/replacement will be determined. A repair estimate is compiled. This
estimate includes a list of required parts and the labor hours required to make the observed repairs. This list will include all bearings, seals, gaskets, wear parts such as bronze bushings, piston rings, etc. Additional labor will be added for the blast, and application
of Ram’s 3-Part Paint System (Ref: PS-100001 for a complete paint system description).


Estimate Approval – The estimate is presented to the customer along with an anticipated delivery date based on the delivery time
of the required parts and the back-log at the time the estimate is prepared.

 

Blast and Paint – After customer approval of the estimate, the main structural components of the winch, will be blasted to remove
all loose paint and rust. The parts will then be visually inspected for signs of excessive wear, cracks, or damage. The parts will then be prepared for paint which will include an inorganic zinc primer, a polyamide epoxy tie coat, and a aliphatic
acrylic polyurethane top coat.


Assembly – A Ram trained technician will re-assemble the winch and make the necessary repairs replacing any removed fasteners
with new one, using new seals and gaskets as required, and replacing any bearings removed during the course of the disassembly. All fluids are replaced.


Load Test – After the winch is repaired the unit will be subjected to a load test equivalent to the bare drum rating of the winch
and an overload test of 125% or the rated load to ensure proper brake holding and structural integrity. A Load Test Certificate
will be provided.


Winch Tags – Winch tags and safety decals will be replaced as possible.


Other Items – If during the course of performing the repair or load test, other items requiring repair are found, the customer will
be notified and an additional estimate will be provided and customer approval obtained before additional work is performed.
Any safety equipment missing from the winch will be noted for the customer to address before returning to service.

 

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