Dynojet 248: Maintenance Guide - Manual (Page 31)

A U T O D Y N O M A I N T E N A N C E
Model 248 Dynos
Version 3 Maintenance Guide for Automotive Dynamometers
27
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MODEL 248 DYNOS
This section covers maintenance items for model 248 dynos.
T HINGS TO C HECK
• Check all air fittings for leaks monthly. Correct any leaks found.
• Once per month verify the drum brake pressure gauge is reading 55 to 65psi
(450kPa). Adjust the regulator if the pressure is out of specification.
• Maintain the brake shoe clearance. Refer to “Checking the 248 Drum Brake Shoe
Clearance” on page 28 for more information.
• Dyno Bearing Grease:
Under steady use, over 25 runs per day, each bearing should receive 1.5oz
(44.36 ml) of a recommended grease every 2 months.
Under occasional use, less than 25 runs per day, each bearing should receive
1.5oz (44.36 ml) of a recommended grease every six months.
Recommended Grease:
grease specification description
thickener Lithium Complex
oil Petroleum
thickness NLGI 2
operating temperature
(Fahrenheit)
-20°F to 200°F, intermittent to 250°F
operating temperature
(Celsius)
-29°C to 93°C, intermittent to 121°C
examples Mobil Mobilith AW-2