Bush Hog CBH80 Operator's Manual download pdf (Page 17)

CAUTION

To avoid possible injury, observe the following

safety rules WHEN SERVICING the backhoe:

1. ENGAGE safety locks as shown in Figures 1 & 3

before servicing the backhoe.

2. DO NOT oil, grease or adjust the backhoe while it

is in motion.

3. DO NOT change any backhoe relief valve settings.

They are factory set for best performance and safety.

4. ESCAPING FLUID under

pressure can have sufficient

force to penetrate the skin

and cause serious injury. Be

sure to relieve all pressure

before disconnecting lines.

Be sure all connections are tight and that lines, pipes

and hoses are not damaged before applying pres-

sure to the system.

5. FLUID ESCAPING from a very small hole can be

almost invisible. Use a small piece of cardboard or

wood - not your hands - to search for suspected

leaks.

6. SEE A DOCTOR AT ONCE if injured by escaping

fluid. Serious infection or gangrene can develop if

proper medical treatment is not administered immedi-

ately.

7. PROTECT YOUR EYES - Wear safety glasses.

Guard against injury when driving connecting pins or

performing any repair in which particles can chip

from work piece or striking tool.

BEGINNING OF SEASON

Remove all protective coverings.

Check hydraulic hoses for deterioration and replace,

if necessary.

Lubricate all grease fittings and oil handle linkages.

Check hydraulic system for loss of fluid and, if neces-

sary, fill to proper level.

Tighten all loose bolts, nuts and setscrews.

Inspect bucket teeth and, if necessary, sharpen or

replace them.

Operate the backhoe slowly for a short time before

placing the unit under full load.

Bleeding Backhoe Hydraulic System

If the hydraulic hoses have been disconnected from

the backhoe or tractor, all trapped air must be

removed after the hoses are connected. Start tractor

engine and operate backhoe through all movements

fully several times to purge the system of air.

Hydraulic System Hoses

Oil leaks in the pressure side of the system can be

located by carefully inspecting the external area of

the hoses and fittings.

Check the return side of the system for leaks by

examining the oil in the reservoir. If air is being drawn

into the system, the oil will contain air bubbles and

appear to foam.

When tightening connections, always use two

wrenches.

IMPORTANT: Do not over-tighten fittings. Make them

just tight enough to eliminate leaks.

NEVER

use teflon tape on pipe thread fittings.

Always use a paste-type sealer.

Hoses on any backhoe are very severely worked and

will fail in time. Examine them regularly and replace

any that show signs of failure. Pay careful attention

to the routing of hoses so they can move fully and

freely without kinking, and cannot be pinched or cut

by any part of the backhoe.

Hydraulic System Reservoir

On PTO pump systems, maintain the reservoir oil at

the proper level by looking at the dipstick. The dip-

stick/breather cap is located directly behind the right

side of the foot platform on the backhoe. When

checking oil level, the backhoe should be extended

to full reach with the bucket rolled back and resting

on the ground. All cylinders are retracted except for

the boom cylinder. Do not overfill; oil may be forced

out of the breather cap.

Fill with:

SAE 10W40 engine oil with API “SF/SG” classifica-

tion in northern climates.

SAE 40W engine oil with API “SF/SG” classification

in southern climates.

Change oil every 200 hours or more often if neces-

sary. To change oil, extend backhoe to full reach with

bucket rolled back and resting on ground. Turn off

tractor PTO and shut down tractor engine. Drain oil

from reservoir and replace drain plug. Refill reser-

voir with 4 gallons of fresh oil following guide-

lines listed above for proper oil selection. Reseat

breather cap and start engine and PTO. After cycling

all backhoe functions several times to remove any air

from hydraulic system, check oil level in reservoir

with backhoe extended to full reach and bucket rolled

back and resting on ground. If oil level on dipstick is

below “ADD” line, add enough oil to bring level up to

“FULL” line. DO NOT overfill reservoir or oil may be

forced out through breather cap during backhoe

operation.

If the tractor system supplies the hydraulic power,

service according to the tractor instruction manual.

SERVICE

1 2 ... 12 13 14 15 16 17 18 19 20 21 22 ... 55 56

Comments to this Manuals

No comments

Bush Hog CBH80 Operator's Manual Page 17

Comments to this Manuals

Related products and manuals for Compact Excavator Bush Hog CBH80