Operators Manual

Special Tool PL-WAL Universal LoF – Item number: 8004932

1. Use and wear limits:

Universal tool for testing the degree of wear of:

Bolt couplings with coupling pin diameter 30/32/37/38 mm
Ball couplings with a nominal diameter of 80 mm
Adjustable rails thickness 30/32 mm
Towing eyes diameter of 40 mm
Calottes with a nominal diameter of 80 mm

Wear limits:

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2. Inspection of different hitch devices:

Figure 2

2.1 Check of coupling pins: (see Figure 2)

Find out the nominal dimension of the coupling bolt offered by the type plate and the instruction guide of the trailer hitch.
Push the corresponding measuring range of the gauge (marked „pin 38, pin 37, pin 32 or pin 30“) above the coupling pin. While doing this the coupling pin needs to be measured at its thinnest point. Normally this is the area, which touches the towing eye. It is important to measure the coupling pin in driving direction. Therefore the coupling pin needs to be demounted as the circumstances require. Caution: models of series KU 2000 can be proved without removing the coupling pin because of the 360° free rotation.
The test piece has reached the technical wear limit when it is completely immersed in the gauge.

2.2 Check of ball80 coupling: (see Figure 3)

Figure 3

Place the corresponding measuring range of the gauge (marked „ball 80“) onto ball80 in driving direction. The gap between the gauge and the edge of the ball shows the degree of wear. The smaller the gap, the closer the ball is to its wear limit. Nominal dimension of ball80: 80 mm, wear limit: 78.5 mm.
The ball80 has reached the wear limit when the gauge encloses the ball completely.

2.3 Check of adjustable rails: (see Figure 4)

Fig. 4

Nominal dimension of the adjustable rails (30 mm or 32 mm) is offered by the type plate and the instruction guide of the adjustable support.
Insert the corresponding measuring range of the gauge (T-shaped, marked „frame 30 or 32“) into the right and left rail (as you can see on Figure 4). The checkup must be conduct in different positions at the adjustable rails, especially the area in which the inserted trailer hitch had operated mostly.
The adjustable rails have reached their wear limit when the gauge fits into the rail completely.

2.4 Check of towing eye 40 mm: (see Figure 5)

Fig. 5

Inner diameter of the eyelet is offered by the type plate and the instruction guide of the towing eye.
Insert the gauge (marked „ring 40“) into the towing eye. The checkup must be conduct in at least four different positions at the extent.
The towing eye has reached the wear limit when it is completely immersed in the gauge.

2.5 Check of calottes 80 mm: (see Figure 6)

Fig. 6

Place the corresponding measuring of the gauge (marked „trailer shank 80“) into the calotte. Use the flashlight to light up the inner zone of the calotte. The gap between the gauge and the surface of the calotte indicates the wear limit. The smaller the gap, the closer the calotte approaches its wear limit. Nominal dimension: 80 mm, wear limit: 81,5 mm.
The calotte has reached the wear limit when the gauge touches the center of the calotte on the inside

2.6 Check of shaft bearing: (see Figure 7)

Figure 7

Place the gauge at the shaft bearing (as you can see on Figure 7). The clearance must be tested in at least four different positions at the extent of the shaft bearing.
The shaft bearing has reached the wear limit when the gauge slightly fits between jaw and clevis.

3. Inspection/Maintenance of universal tool:

For daily use, it is recommended to check the individual test areas of Walterscheid universal tool once a year according to the dimensions in figure 8 with appropriate measuring equipment. Depending on the actual number of uses, this period can be extended to 60 months. If the deviations are more than 0.1 mm, the universal gauge must be replaced

Fig. 8

The gauge must be cleaned with commercially available cleaning agents after use. Use only in clean and undamaged condition. Unauthorized modifications on special tool are not permitted.

Safety instructions

Important:

To avoid injury, protective gloves, safety glasses and safety shoes must be worn during all dismantling/ assembly actions described in this chapter.

Environment:

Lubricants can enter the environment. Environmental pollution: Collect, store and correctly dispose of lubricants in suitable containers.

Warning:

The pertinent safety regulations must be observed when coupling and uncoupling. No one may stand between the vehicles. The coupling may only be operated in locked condition. When coupling and uncoupling, the drawbar must be as horizontal as possible relative to the coupling.

The user is obliged to always operate the Connecting device in perfect condition and to forbid its use by unauthorised persons. The loads indicated on the type plate may not be exceeded. Unauthorised conversion or modification of the coupling head is not permitted.

Caution:

Never uncouple when the trailer is pulling or pushing. Use of force on the hand lever can destroy the mechanism.

Important:

Use only original Walterscheid spares when replacing parts. If the vehicle owner does not have the appropriate skilled workers and the necessary technical equipment, the replacement may only be performed by a specialist workshop.

The checks must be carried out at the appropriate intervals in order to prevent damage to the coupling.

Note:

The pertinent regulations (e.g. Accident Prevention Regulations for Vehicles) and the attachment guidelines of the vehicle manufacturers must be observed when installing the coupling! The coupling must be attached to the vehicle in accordance with the requirements in Appendix VII of Directive 94/20 / EC (see Appendix I, Section 5.10).

To the product Further documents

Document Name:
ba-tasc-80910-en-gb
Test gauge PL-WAL Universal LoF

Document type:
Assembly and Instruction Guide

Language versions:
German

Manual for Walterscheid item numbers:
8004932

As of:
19.03.2024

Special Tool PL-WAL Universal LoF – Item number: 8004932

1. Use and wear limits:

2. Inspection of different hitch devices:

2.1 Check of coupling pins: (see Figure 2)

2.2 Check of ball80 coupling: (see Figure 3)

2.3 Check of adjustable rails: (see Figure 4)

2.4 Check of towing eye 40 mm: (see Figure 5)

2.5 Check of calottes 80 mm: (see Figure 6)

2.6 Check of shaft bearing: (see Figure 7)

3. Inspection/Maintenance of universal tool:

Safety instructions

Important:

Environment:

Warning:

Caution:

Important:

Note:

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