621 TRACTOR-SCRAPER Parking The Tractor-Scraper Caterpillar

Stopping

1. Reduce travel speed.

2. Apply hydraulic retarder, if so equipped.

3. Shift manual type transmission to lower gear speed as tractor-scraper slows down. (Semiautomatic transmission will automatically shift down to 2nd speed as tractor-scraper speed decreases.) Apply service brakes to stop tractor-scraper.

4. Shift transmission to NEUTRAL and apply safety lock.

5. Run engine at low idle if it is to be stopped.

Parking

1. Push control to lower scraper bowl.

2. Place emergency brake lever in park, if so equipped.

3. Push cushion-hitch control to LOCK DOWN.

Stopping the Engine

1. Operate under light load for 5 minutes.

2. Run engine at low idle for 30 seconds.

3. Lift toe of accelerator past detent to stop engine.

4. Turn disconnect switch OFF. Remove key if leaving tractor-scraper.

Show/hide table

Never turn disconnect switch off when engine is running.

5. Drain water from tractor-scraper air reservoirs. (Do not turn drain bolt more than one full turn.)

TRACTOR STANDARD AIR RESERVOIRS

TRACTOR EMERGENCY AIR RESERVOIR

Rollover Protective Structure Equipped Tractors

TRACTOR STANDARD AIR RESERVOIRS

TRACTOR EMERGENCY AIR RESERVOIR

SCRAPER EMERGENCY AIR RESERVOIR