Engine Maintenance
101
c. Use a 7/8 in. crow’s foot attached to a 3/8
in. torque wrench to turn the sprocket and
obtain a reading of 40 in-lb (4.5 N•m) on
the torque wrench for used belts and 45
in-lb (5.0 N•m) for new belts. Tighten the
pulley bolt while holding the sprocket in
this position. When using this procedure,
the pulley bolt must at first be loose
enough to allow the sprocket to rotate
freely. If not, the reading on the torque
wrench will not produce the proper belt
tension.
3. Place the compressor/evaporator
fan/alternator belt in the compressor pulley
and check to see that it is centered in the slot
on the left side of the idler bracket. If not,
adjust the position of the left evaporator fan
pulley on the fan shaft so the belt is centered
in the slot. Adjust the compressor/evaporator
fan/alternator belt to the proper tension after it
is centered in the slot.
4. Adjust the compressor/jackshaft (electric
motor) belt to the proper tension. The belt
tension should be set at a reading of 67 ± 3 on
the Thermo King Belt Tension Gauge. If the
Thermo King Belt Tension Gauge is not used,
the belt should deflect 1/2 in. (13 mm) at the
center of the longest span.
The engine/compressor belt tension should be set
at a reading of 70 ± 3 on the Thermo King Belt
Tension Gauge.
The compressor/jackshaft (electric motor) belt
tension should be set at a reading of 67 ± 3 on the
Thermo King Belt Tension Gauge.
If the Thermo King Belt Tension Gauge is not
used, the belt should deflect 1/2 in. (13 mm) at the
center of the longest span.
Belts should be tensioned cold and retensioned
cold after 10 hours of running. Reset
engine/compressor belt to 70 ± 3. Reset
compressor/jackshaft (electric motor) belt to
67 ± 3.
1.
Engine
2.
Compressor
3.
Jackshaft or Electric Motor
Figure 53: Belt Layout
ARD044
Summary of Contents for MD-MT
Page 4: ...4...
Page 10: ...Table of Contents 10...
Page 22: ...Specifications 22...
Page 43: ...Unit Description 43 Figure 15 Engine Side Door Open ARD041...
Page 48: ...Unit Description 48...
Page 128: ...Refrigeration Service Operations 128...
Page 134: ...Hilliard Clutch Maintenance 134...
Page 136: ...Structural Maintenance 136...
Page 148: ...Refrigeration Diagnosis 148...
Page 150: ...Remote Evaporator Specifications 150...
Page 152: ...Remote Evaporator Maintenance Inspection Schedule 152...
Page 156: ...Remote Evaporator Unit Description 156...
Page 160: ...Remote Evaporator Structural Maintenance 160...
Page 162: ...Remote Evaporator System Diagnosis 162...
Page 166: ...Wiring and Schematic Diagrams Index 166...
Page 167: ...167 MD RD MT Model 30 w In Cab Schematic Diagram Page 1 of 2...
Page 168: ...168 MD RD MT Model 30 w In Cab Schematic Diagram Page 2 of 2...
Page 169: ...169 MD RD MT Model 30 w In Cab Wiring Diagram Page 1 of 3...
Page 170: ...170 MD RD MT Model 30 w In Cab Wiring Diagram Page 2 of 3...
Page 171: ...171 MD RD MT Model 30 w In Cab Wiring Diagram Page 3 of 3...
Page 172: ...172 MD RD MT Model 30 w In Cab CYCLE SENTRY Schematic Diagram Page 1 of 2...
Page 173: ...173 MD RD MT Model 30 w In Cab CYCLE SENTRY Schematic Diagram Page 2 of 2...
Page 174: ...174 MD RD MT Model 30 w In Cab CYCLE SENTRY Wiring Diagram Page 1 of 3...
Page 175: ...175 MD RD MT Model 30 w In Cab CYCLE SENTRY Wiring Diagram Page 2 of 3...
Page 176: ...176 MD RD MT Model 30 w In Cab CYCLE SENTRY Wiring Diagram Page 3 of 3...
Page 177: ...177 MD RD MT Model 30 CYCLE SENTRY Wiring Diagram Page 1 of 3...
Page 178: ...178 MD RD MT Model 30 CYCLE SENTRY Wiring Diagram Page 2 of 3...
Page 179: ...179 MD RD MT Model 30 CYCLE SENTRY Wiring Diagram Page 3 of 3...
Page 180: ...180 MD RD MT Model 50 w In Cab Schematic Diagram Page 1 of 2...
Page 181: ...181 MD RD MT Model 50 w In Cab Schematic Diagram Page 2 of 2...
Page 182: ...182 MD RD MT Model 50 w In Cab Wiring Diagram Page 1 of 3...
Page 183: ...183 MD RD MT Model 50 w In Cab Wiring Diagram Page 2 of 3...
Page 184: ...184 MD RD MT Model 50 w In Cab Wiring Diagram Page 3 of 3...
Page 185: ...185 MD RD MT Model 50 w In Cab CYCLE SENTRY Schematic Diagram Page 1 of 2...
Page 186: ...186 MD RD MT Model 50 w In Cab CYCLE SENTRY Schematic Diagram Page 2 of 2...
Page 187: ...187 MD RD MT Model 50 w In Cab CYCLE SENTRY Wiring Diagram Page 1 of 3...
Page 188: ...188 MD RD MT Model 50 w In Cab CYCLE SENTRY Wiring Diagram Page 2 of 3...
Page 189: ...189 MD RD MT Model 50 w In Cab CYCLE SENTRY Wiring Diagram Page 3 of 3...
Page 190: ...190 MD RD MT Model 50 CYCLE SENTRY Wiring Diagram Page 1 of 3...
Page 191: ...191 MD RD MT Model 50 CYCLE SENTRY Wiring Diagram Page 2 of 3...
Page 192: ...192 MD RD MT Model 50 CYCLE SENTRY Wiring Diagram Page 3 of 3...