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Maintenance Of Engine Cylinder
Maintenance Of Engine Cylinder
2022-07-08
interior-cab-devices
How to use and maintain the HOVA range of internal combustion tractor interior cab devices?
2022-08-05

How to use and maintain the HOVA range of internal combustion tractor exterior cab devices?

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Use the door switch outside

1. Left door

Open the door: the door is in “fully closed” position but not locking status, directly pull the handle down and outward to open the door; if the door is in locking
status, use the key to turn the key cylinder clockwise about 60°and then pull the handle down and outward to open the door.
Close the door: slam the door to make it in “fully closed” position. If lock the door, use the key to turn the key cylinder anticlockwise about 10° and then pull the
key out. Pulling the handle cannot open the door now.

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2. Back sliding door

Open the door: the door is in “fully closed” position but not locking status, directly pull the door locking handle to the left and then push the handle of back door
soon to the left to open the door; if the door is in locking status, use the key to turn the key cylinder anticlockwise about 180°and then pull the door locking
handle again to open the door.
Close the door: slam the door to make it in “fully closed” position. If lock the door, use the key to turn the key cylinder clockwise about 180° and then pull the
key out. Pulling the handle cannot open the door now.

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Use the door switch inside

1. Left door

Open the door: pull the inside lock handle outward to open the door lock, and then push the handle outward to open the door.
Close the door: slam the door to make it in “fully closed” position, and the door is closed. If lock the door completely, use the key to lock it outside.

2. Back sliding door

Open the door: put the inside lock knob of the back door in “U” position, pull the handle to the left to open the door lock, and then push it to the right to open the
door.
Close the door: put the inside lock knob of the back door in “U” position, slide the door to the left to close to make it in “fully closed” position, and the door is
closed. If lock the door completely, put the inside lock knob in “L” position in “fully closed” position, and pulling the handle cannot open the door now.

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Opening and closing of engine hood

1. Opening of engine hood

(1) Grasp and pull the handle up to open the engine hood.

2. Closing of engine hood

(1) Grasp and pull the handle down to close the engine hood, and the hood is automatically locked.

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Cab front shield

(1) The front shield is inside of the cab and close to the right side of the instrument board (as shown in Figure 1.9). Pull it outward to open the front shield;
Pull it down to close the front shield, and the shield is automatically locked (as shown in Figure 1.10).
(2) The electrical appliances box is on the right side of the front shield, open the shield, and see the box (as shown in Figure 1.11).

exterior-cab-devices

Cab turnover

1. Cab turnover operation

1.1 Park the tractor on the flat road and take out the unsecured articles in the cab before turnover. (as
shown in Figure 1.12)
1.2 Nobody can stand nearby in front of the cab at the time of turnover! (as shown in Figure 1.13)
1.3 Pull the switch handle of lifting oil pump to “↑” position, and press the button of lifting oil pump (as shown
in Figure 1.16) to turn over until the cab is turned over completely by dead weight (straighten it with limit
drawstring). (as shown in Figure 1.14)
1.4 Turn the cab back to original position: pull the switch handle of lifting oil pump to “↘” position, and press
the button of oil pump to turn the cab back (as shown in Figure 1.15) until the locking pin inserts into the
hydraulic lock piece and continue pressing it until the cab do not move any more, and keep the switch
handle in “↘” position.

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2. Refueling and exhaust of turnover system

2.1 Open the oil plug (as shown in Figure 1.16) to fill the stipulated hydraulic oil.
2.2 Turn over the cab with hand pump as continue to fill the oil.
2.3 Make the cab fall and meanwhile let excess oil overflow.
2.4 Turn back the cab to original position with the oil pump, check and refill the oil until fill it up.
2.5 Screw up the oil plug finally.

3. Function check of turnover system

3.1 Turn the cab forward to the top dead center, and check the cab fall condition after exceeding the top dead center; if the system works normally, the cab
shall fall slowly under the damping condition, without impact phenomenon.
3.2 Turn the cab over about 30º, the cab shall keep in this position for 20 min and not go down.

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