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Manufacturing / Industrial • Inspections

A - A108C Grip Overhaul - Mech - Dopp UNIG

This procedure guides technicians through the overhaul, testing, and reassembly of the Doppelmayr A108C grip.
Global Lifts - Vail Resorts
01/29/2026

A - A108C Grip Overhaul - Mech - Dopp UNIG

This procedure covers the mechanical overhaul and testing of the Doppelmayr A108C grip, including full disassembly, parts cleaning, and non-destructive testing (NDT) of critical components. It also includes measurement verification against manufacturer specifications, part replacement as needed, and reassembly per the maintenance manual before reinstallation.

    GRIP INFO

    GRIP #

    GRIP DISASSEMBLY

    IN SHOP ON GRIP STAND

    NDT

    PARTS NDT per Technique Sheet

    TYPE OF MAG : AC COIL MEDIUM TYPE : WET/FLOURESCENT DURATION : 0.5 seconds USE PIE GUAGE TO VERIFY FIELD STRENGTH

    • Pass
    • Flag
    • Fail
    • Criticalareasfixedjaw.png
    • Criticalareasmovablejaw.png
    • Criticalhangerareas.png
    • CriticalSpringSlideRod.png
    • CriticalAxleUpperSpringPlate.png
    • CriticalJawaxleTongue.png

    Axles for Running Wheels

    • CriticalAxleforRunningWheels.png

    All Parts Cleaned Post NDT

    • Yes
    • No
    • N / A

    All Parts De-Maged Under 2.5 Gauss

    • Yes
    • No
    • N / A

    NOTE ANY REJECTED PARTS AND REASON FOR REJECTION

    NDT INSPECTOR

    VAIL MOUNTAIN NDT BOOTHS

    SELECT NDT BOOTH USED

    if the answer is "oneOf [EAGLE'S NEST]"

    MagWerks PSAH-545 Wet Horizontal Bench Coil

    MACHINE SERIAL NUMBER : 220802

    Notch Bar Test | Date and Personnel

    Bath Concentration

    Must be between 0.1 and 0.25

    if the answer is "oneOf [GONDOLA ONE]"

    TSI WHM-4400 Wet Horizontal Bench Coil

    MACHINE SERIAL NUMBER : 44121220

    Notch Bar Test | Date and Personnel

    Bath Concentration

    Must be between 0.1 and 0.25

    if the answer is "oneOf [7 SHOP]"

    MagWerks PSAH-545 Wet Horizontal Bench Coil

    MACHINE SERIAL NUMBER : 230105

    Notch Bar Test | Date and Personnel

    Bath Concentration

    Must be between 0.1 and 0.25

    if the answer is "oneOf [14 SHOP]"

    Magnaflux H7IO Wet Horizontal Bench Coil

    MACHINE SERIAL NUMBER : 79991

    Notch Bar Test | Date and Personnel

    Bath Concentration

    Must be between 0.1 and 0.25

    MEASURMENTS

    PARTS TO BE CHECKED PRE-INSTALLATION

    MINIMUM VALUES (MM) Pull Test/Grip Force (DO NOT EXCEED 27.6KN)

    Hanger Bearing Measurement | MINIMUM : 74.8 MM

    Head Axle Measurement | MINIMUM : 31.9 MM

    Spring Crosshead Measurement | MINIMUM : 49.9 MM

    Washer Measurement | MINIMUM : 3.5 MM

    Front Spring Axle Measurement | MINIMUM : 27.9 MM

    Rear Spring Axle Measurement | MINIMUM : 27.9 MM

    Front Roller Axle Measurement | MINIMUM : 34.9 MM

    Rear Roller Axle Measurement | MINIMUM : 34.9 MM

    Front Spring Pack (released) Measurement | MINIMUM : 389 +/- 5MM

    Rear Spring Pack (released) Measurement | MINIMUM : 389 +/- 5MM

    Front Spring Guide Measurement | MINIMUM : 21.9 MM

    Rear Spring Guide Measurement | MINIMUM : 21.9 MM

    Front Running Roller Measurement | MINIMUM : 177 MM

    Rear Running Roller Measurement | MINIMUM : 177 MM

    Actuator Roller Measurement | MINIMUM : 147 MM

    Guide Roller Measurement | MINIMUM : 152 MM

    Front Dim C Measurement | MINIMUM : 9 MM

    Rear Dim C Measurement | MINIMUM : 9 MM

    Dim B Measurement | MAXIMUM : 35.1 MM

    Pull Force Measurement | MINIMUM : 23.0 KN

    PARTS

    PARTS TO BE REPLACED

    REPLACE AS REQUIRED

    NOTE ANY REJECTED PARTS AND REASON FOR REJECTION

    GRIP REASSEMBLY

    GRIP REBUILT BY

    INSPECTION

    GRIP INSPECTED BY

    Click here to sign

    CURRENT HOUR METER

    Meter name
    Unit

    NOTES:

    PHOTOS:

    Add or drag pictures
Source: Global Lifts - Vail Resorts (Community Member)

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