657 TRACTOR-SCRAPER After Starting Caterpillar

3. Check crankcase oil level with engine at low idle, machine level and oil warm. Oil level should be between ADD and FULL marks on ENGINE RUNNING side of dipstick.

4. Check transmission oil level with engine at low idle, machine level and oil warm. Oil level should be between ADD OIL and FULL HOT marks on dipstick.

5. Check hydraulic oil filter change indicator. Have filter serviced if RED plunger in indicator is visible when oil is warm.

6. Check air cleaner service indicator. If RED 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 warm. Oil level should be between ADD OIL and FULL marks on dipstick.

4. Check transmission oil level with engine at low idle, machine level and oil warm. Oil level should be between ADD OIL and FULL HOT marks on dipstick.

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

Show/hide table

If scraper warning horn sounds, check the transmission synchronization light immediately. If the light is on, report scraper transmission problems. If the light is not on, stop scraper engine. Check scraper gauges to determine cause of warning (high torque converter temperature, high water temperature, high retarder oil temperature, low fuel pressure or low engine oil pressure). Correct cause or report needed repair.

Gauges

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