657 TRACTOR-SCRAPER After Starting Caterpillar

Tractor

1. Keep engine speed low until oil pressure registers. If oil pressure does not register, stop engine and investigate.

2. Operate engine under light load for 5 minutes. Do not engage hydraulic controls during this period.

NOTE: It is possible to start the engine when the transmission selector lever is in other than NEUTRAL. Should this happen, move the selector lever to NEUTRAL then to the desired speed range.

3. Check crankcase oil level with engine at low idle, machine level and engine at normal operating temperature. Engine oil level should be between ADD OIL and FULL marks.

4. Check transmission oil level with machine level, engine at low idle and oil at operating temperature. Transmission oil level should be between FULL HOT and ADD OIL marks.

5. Check hydraulic oil filter change indicators. Have filter serviced if red plunger in indicator is visible when oil is at operating temperature.

6. Check air cleaner service indicator. If colored piston is locked in the visible position, have air cleaner serviced.

Scraper

1. Regulate scraper engine speed by moving governor control. Keep engine speed low until oil pressure registers. If oil pressure does not register, stop engine and investigate.

2. Depress brake pedal to release accelerator lock. Operate engine under light load for 5 minutes.

3. Check crankcase oil level with engine at low idle, machine level and oil at normal operating temperature. Engine oil level should be between FULL and ADD OIL marks.

4. Check transmission oil level with machine level, engine at low idle and oil at operating temperature. Transmission oil level should be between FULL HOT and ADD OIL marks.

5. Check air cleaner service indicator. If colored piston is locked in the visible position, have air cleaner serviced.

If scraper warning horn sounds, check transmission synchronization light immediately. If light is not on, stop scraper engine. Check to determine cause of warning (high torque converter temperature, high coolant temperature, high retarder oil temperature, low fuel pressure or low engine oil pressure).

Gauges

Check gauges frequently during operation. All gauges must indicate in the NORMAL operating range. The ammeter is normal when the indicator is at or on the (+) side of zero.