MIO-R290GM2011 Rev E
G&B Specialties Inc. 535 West 3
rd
Street, Berwick, PA, USA Tel: (570) 752-5901 Fax: (570) 752-6397
US Field Service: 570-441-6988; CAN Field Service 570-854-0482; www.rafna.com
-20-
TECHNICAL SERVICE BULLETIN
RAFNA RAILGEAR
ISSUE DATE:
June 17, 2013
TSB NUMBER:
TSB-190
HAZARD / URGENCY RATING
X
DANGER - Physical harm is possible if TSB is not observed or followed
X
WARNING - Equipment damage is possible if TSB is not observed or followed
X
CAUTION - Essential issue affecting operation, service, parts or installation
X
INFORMATIONAL - Advisory which may be of interest
APPLICABLE EQUIPMENT:
R290 Railgear
SUMMARY:
Wear at the Inner Guide Tube Axle Guide Tube Pin area on the Axle has been found at
various degrees of wear depending upon age of unit and amount of Maintenance performed
on Railgear.
IMPACT:
Excessive wear in this area can lead to an axle failure.
ACTION:
Inspect this area as follows to determine the amount of wear acceptable before axle change
is required:
Primary method of Inspection
Inspect vehicle as close to actual use by means of, rail, alignment rack, two by fours or steel
tubing.
Deploy railgear and observe or measure axle movement at the Axle Guide Pin Location.
You can have 1/8” of wear in both the up and down direction from center line of the Axle
Guide Pin.
This would be a total of 1/8” up from center and 1/8” down from center, for a total of ¼”
wear.
If the ¼” wear is all up from center or all down from center, then this would not be
acceptable. If axle is out of specifications replace with Axle R-2930.
Pin should show no wear. If pin shows wear replace with P/N, R990KIT-353.
Alternate method for inspection
Lower Railgear until it is resting on the ground without any load being applied to it. Remove
5/32” cotter pin and slide bellows out of the way, then remove Guide Tube Pin. Now inspect
axle and pin for wear. Replace pin and cotter pin and proceed to other end of axle and
repeat inspection process. Inspection process for pin wear and axle wear is as follows:
If pin shows wear replace with P/N, R990KIT-353.
Use Alternate Method of Inspection drawing which shows limits of wear for slots and holes.
Use appropriate measuring tools to perform the required measurement. Measuring tools will
vary from location to location. If Axle is out of specifications replace with Axle R-2930.
