1、 FORD LABORATORY TEST METHOD BJ 113-03 Date Action Revisions 2001 07 24 Revised Editorial no technical change A. Cockman 1990 05 16 Printed copies are uncontrolled Page 1 of 3 Copyright 2001, Ford Global Technologies, Inc. HIGH TEMPERATURE WHEEL BEARING GREASE LEAKAGE TEST Application This procedure
2、 is used to determine the oil and grease leakage properties of front wheel bearing greases at 163 +/- 3 C temperature and the condition of the grease and bearings after completion of the test. The procedure is a modification of ASTM D 1263, “Leakage Tendencies of Automotive Wheel Bearing Greases“. A
3、pparatus Required Test Apparatus Use apparatus described in ASTM D 1263 available from: Source: Testing Machines Inc. 2910 Expressway Dr. S. Central Islip, NY 11749-1407 (Koehler Model K187) or other source referenced by ASTM for ASTM D 1263. Modify the main spindle for the addition of a stem-type t
4、hermocouple to control the test temperature adjacent to the inner bearing. Drill a suitable diameter hole from the large end of the tapered shaft on an angle toward the 7.14 mm dia x 38.1 mm hole in the center of the shaft. Insert thermocouple through the drilled hole so the point is below the inner
5、 bearing diameter to permit installation of bearing. Connect wires coming out of the 7.14 mm dia hole to a temperature indicator or recorder. Note: Inasmuch as the high temperature may deteriorate the V-belt, the belt should be checked visually prior to each test for wear. Test Bearings and Cups Out
6、er Bearing No. 09074 Outer Cup No. 09196 Inner Bearing No. 15118 Inner Cup No. 15250 X Spatula FORD LABORATORY TEST METHOD BJ 113-03 Page 2 of 3 Copyright 2001, Ford Global Technologies, Inc. Syringe Oven Shall be capable of maintaining 163 +/- 3 C. Materials Required ASTM Precipitation Naphtha or S
7、toddard Solvent Do not use chlorinated solvents. Caution: Low flash point. Refer to Fire Control Bulletin No. 18. Refer to Industrial Hygiene for health and safety comments. (Industrial Hygiene Field Service, Telephone (313) 337-8955). Conditioning and Test Conditions All test values indicated herei
8、n are based on material conditioned in a controlled atmosphere of 23 +/- 2 C and 50 +/- 5 % relative humidity for not less than 24 h prior to testing and tested under the same conditions unless otherwise specified. Procedure 1. Clean spindle, inside of hub, collector and hub cap with the prescribed
9、solvent. Weigh collector and cap to nearest 0.1 g, record each. 2. Clean bearings and cups thoroughly with the prescribed solvent and dry in oven at 38 +/- 1 C for approximately 1/2 h. 3. Install cups in hub. New bearings and cups are not required for each test. However, if any part shows staining,
10、corrosion, wear or surface defects, that part and its mating part should be replaced. 4. Use a total of 60 +/- 2 g of grease for bearings and hub. 5. Pack outer bearing with 2.9 +/- 1 g and inner bearing with 4.7 +/- 0.1 g of grease. A suitable syringe is recommended to fill grease in between the be
11、aring rollers. With narrow blade spatula, press grease between the rollers to remove air pockets and level grease with edge of cage. 6. Distribute remaining grease inside the hub adjacent to each cup. Do not put grease into the hub cap. FORD LABORATORY TEST METHOD BJ 113-03 Page 3 of 3 Copyright 200
12、1, Ford Global Technologies, Inc. 7. Place collector and inner bearing on spindle so that the inner lip of collector is flush with the sealing face of the spindle to prevent interference with correct seating of the bearing. 8. Put the hub and outer bearing on the spindle, insert retainer ring (washe
13、r) and tighten with hex-nut. Apply a torque of 6.8 +/- 2 N.m on nut, then back off nut 60 +/- 5 (or one flat of nut) and lock in position with second hex-nut. During the assembly, care should be taken to prevent contact of the grease in the hub with the spindle. 9. Close cabinet and turn on motor an
14、d both heaters. Set thermostat knob to maintain 163 +/- 3 C by observing thermocouple temperature on suitable temperature indicator or recorder. 10. Operate at speed of 660 +/- 30 rpm for 6 h +/- 5 minutes. This time includes starting at 23 +/- 2 C. 11. At the end of the 6 h test period, shut off po
15、wer and allow to cool to 23 +/- 2 C. 12. Weigh the collector and hub cap separately with the collected oil-grease to nearest 0.1 g. Total the weight of oil-grease in both parts. 13. Remove grease from both bearings and cups and clean in the prescribed solvent. Inspect bearings and cups for varnish,
16、gum and lacquer-like deposits. Report the following: A. Oil-grease loss in g. B. Condition of bearings, as presence of stain, varnish, gum, lacquer-like material, etc. Chemicals, materials, parts, and equipment referenced in this document must be used and handled properly. Each party is responsible for determining proper use and handling in its facilities.
