MH-O-MF220BKH

MMaasssseeyy HHaarr rr iissMMaasssseeyy FFeerrgguussoonn

Operator’s ManualMF220

Backhoe

THIS IS A MANUAL PRODUCED BY JENSALES INC. WITHOUT THE AUTHORIZATION OF MASSEY HARRIS MASSEY FERGUSON OR IT’S SUCCESSORS. MASSEY HARRIS MASSEY FERGUSON AND IT’S SUCCESSORS

ARE NOT RESPONSIBLE FOR THE QUALITY OR ACCURACY OF THIS MANUAL.

TRADE MARKS AND TRADE NAMES CONTAINED AND USED HEREIN ARE THOSE OF OTHERS, AND ARE USED HERE IN A DESCRIPTIVE SENSE TO REFER TO THE PRODUCTS OF OTHERS.

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INTRODUCTION

PERIODIC MAINTENANCE. . Lubrication . . . . .. . Hydraulic Oil . . . . • . Preventive Maintenance

OPERATION· ....... . General Operating Hints Shifting Mast . . . . . . . Correct Operating Techniques . Boom Lock-out Valve. Crowd Lock-out Valve . . . . .

ASSEMBLY . ........... . Detaching and Attaching . . . • Backhoe S ills and Upper Links • Boom and Dipper Stick . . . . • .

INDEX

. '.'

SERVICING .......•............. Boom, Dipper Stick Crowd and Bucket Cylinders Stabilizer Cylinders ...•......•... Control Valve. • . . . • • • • . . • . . . . • • • Removing and Replacing Rotary Vane Cylinder Checking Hydraulic Pressure. . . . . . Service Pointers and Trouble-Shooting

Page

1 1 1

••. 2

· . 3 3 3

. 4 6

• • 7

7 • 7

· . 8 9

11 11 11 12 12 13 14

SPECIFICATIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16

IMPLEMENT IDENTIFICATION Each implement is identified by means of an

implement serial number. This number is per­manently recorded on the serial number plate. Plate is located on right side of seat frame. To assist your local dealer in giving you prompt, efficient service when you request it, it is sug­gested that you record this serial number so that you may quickly refer to it when any ques­tion regarding the identity of your implement arrises.

IMPLEMENT SERIAL NUMBER

Massey.Fcrguson reserves the right to make changes or odd improvements at any time without Incurring any obligation to make such changes

on machines sold previously,

PERIODIC MAINTENANCE

Fig. 1 - Lubrication Chart 1. Boom Cylinder Pivot Pin 2. Boom Pivot Pin

3. Boom Cylinder Cross Head Pin

Theservice the machine will give is depen­dent on the maintenance the machine receives. Most Important is that the daily checks be car­ried out on both the tractor and backhoe.

Always lower the backhoe bucket to the ground for safety.

Complete cleanliness is necessary, when maintaining the hydraulics; any part reassem­bled in a dirty condition could result in serious problems.

Maintenance of the machine is separated into four items:

Daily Check Weekly Check Oil Filter Air Breather/Cleaner

DAILY CHECK

a. Check oil level in reservoir of loader frame by, first, cleaning dirt from around dip­stick and breather before removing.

4. Crowd Cylinder Pivot Pin 5. Dipper·Stick Pivot Pin

6. Crowd Cylinder Cross Head Pin 7. Bucket Cyiinder Pivot Pin

b. Add oil, if necessary (to full mark), with type "AU automatic transmission oil.

NOTE: An alternate fluid may be used, if it is currently approved for general automotive use, according to the ar­mour qualifications system, provided the armour qualifications num ber and date is certified and made record by the supplier. This includes type ''A" suffix '~II fluids. Do not use motor oil or detergent oil, as its use will seriously damage the hydraulic sys­tem.

c. Visual inspection of all hydraulic cylin­ders, control valves and hose connections for oil leaks.

d. Grease all points indicated in Fig. 1.

NOTE: Do not grease stabilizerslides, as this will tend to Pick up grit and cause extreme wear.

1

OBTAINING A STRAIGHT TRENCH

To obtain a straight trench, it is best to mark out a line of lime or chalk about one foot off center of trench, and, then, make a slight marking on the backhoe frame about one foot off center. The operator can maintain a straight line by keeping the mark on the backhoe di­rectly over the lime marking on the ground.

Fig. 5 - Digging to Expose Pipe

DIGGING TO EXPOSE A LEAKY PIPE OR DRAIN

When carrying out this operation, always dig along the line of pipe, and never cross it. Ex­cavate around the leak to give ample room for the repair to be made; note Fig. 5.

Fig. 6 - Grave Digging

GRAVE DIGGING

First, select the bucket for the width of the grave, preferably, a bell hole; this type bucket will enable you to dig a grave in one setting and square the front and back walls easily.

Position the backhoe in line with the grave, with the backhoe swing pivot approximately 48" from the nearest edge of the gra ve (Fig. 6). Locate the tractor so a trailer or small dump

Fig. 7 - Backhoe Positioning

truck can be set to dump the surplus soil into; see Fig. 7.

Cemeteries spend considerable money to keep the turf in good condition. It is important that it should not be damaged. Here are some use­ful rules.

When permitted to cut the turf, remove only enough to accommodate the stabilizers. Fit the spikes into the feet for rigidity; note Fig. 8.

If it is not permissible to cut the turf, then, use a 2" x 12" x 7' oak plank; drill holes to match the holes in the stabilizers. Set the sta­bilizers on the plank and drive steel stakes through the holes to hold the stabilizers and plank from moving (Fig. 9).

Fig. 8 - Removing Turf

Fig. 9 - Backhoe Stabilizing

5

Fi g. 10 - Excavating on Slopes

Fig. n - Plumb Trenching

Cut and remove the turf for the outline of the grave; this will eliminate rugged edges, and keep the walls clean and straight.

Take shallow bites of dirt from the grave un­til you have reached a depth of approximately 18"; this will avoid damage to the surrounding turf. Thereafter, remove dirt by full buckets. Remember, grave digging is not high-speed work; this job must be done with great accu­racy.

TRENCHING OR EXCAVATING ON SLOPES

When trenching on a slope, always start at the top and work downward. When working across a slope, make full use of the hydraulic stabilizers on the backhoe to level the machine. Always pile the dirt on the uphill side (Fig. 10).

To dig plumb trenches on slopes over a 10% slope, use the backhoe to cut out a small ter­race, as in illustration Fig. No. 11, and pile the soil on the lower side to provide a firm sup­port.

BOOM LOCK-OUT VALVE

The boom lock-out valve is located on the left side of the seat frame and is used to lock the boom in transport position. This valve is stan­dard on all 220 Backhoes now in production.

6

Fig. 12 - Boom Lock Valve (Digging Position)

Fig. 13 - Boom Lock Valve (Locked Position)

Fig. 14 - Crowd Lock Valve (Locked Position)

When using the backhoe for digging, move the lock valve control handle in the forward posi­tion; see Fig. 12.

When not using the backhoe, move lock valve control handle to the rear position; see Fig. 13.

CROWD CIRCUIT LOCK-OUT VALVE

The crowd lock-out valve is available as an accessory under machine code (No. 274943)and this valve mounts on the right side of seat frame. When valve control lever is in the rear­ward position, the crowd circuit is locked out; see Fig. 14.

Move the valve control lever in the forward position when using backhoe; see Fig. 15.

NOTE: Be sure to lock out control valve levers when backhoe is not in

Fig. 15 - Crowd Lock Valve (Digging Position)

use, as this protects the hydraulic system.

ASSEMBLY

DETACHMENT AND ATTACHMENT

Before attempting to detach or attach the backhoe, it is important to ensure that:

a. The operator has been instructed in the use of the hydraulic controls by an authorized person.

b. The operator has read the instructions under "Maintenance", and carried out all checks that are indicated.

c. The operator has studied the ''Safety First" notes in this publication.

DEl ACHMENl PROCEDURE

1. Position the backhoe to form a triangle with the main frame in the following manner:

a. Extend stabilizers to ground level.

b. Lower bucket to ground about 7"'8 feet from main frame.

2. Remove linch pins and withdraw shoulder pins securing the attaching beams to the main frame.

3. Remove linch pins and withdraw shoulder pins securing the tie links to the main frame.

4. Retract stabilizers to lower the backhoe.

5. Correct vertical alignment of main frame by operating boom ram control lever.

6. Switch off engine and reiease pressure from the hydraulic system (except boom) by operating control levers.

7. Disconnect pressure hose at the quick­coupler. Disconnect return hose at the quick­coupler and attach pressure line from the valve to the reservoir.

8. Do not connect the pressure and return hose on the backhoe.

9. Drive tractor clear of backhoe.

7

Fig. 16 - Backhoe to Loader Hydraulics

ATIACHING PROCEDURE

Reverse detaching procedure.

ASSEMBLY 220 BACKHOE

The M-F 220 Backhoe is shipped from the factory basically assembled, with the exception of the boom and dipper stick.

The attaching kit consists of sills, upper links and hydraulic hose and fittings.

INSTALLATION OF SILLS

AND UPPER LINKS

If an M-F Loader has been installed, remove fender bolts and install fender plates, moving fenders out, using 5/8" x 6-1/2" bolts original­ly used to attach fenders. Install with nuts up. Bolt fenders onto plates, using 5/8" x 1-1/2" bolts. Fenders must be set out to allow clear­ance for upper links to backhoe.

8

Attach backhoe sills.to loader rear brackets, using two 1" x 3-1/4" pins with klik pins; attach front section of backhoe sills to loader along with upper links, using two 1" X 3-1/4" pins.

Install power-beyond fitting "E", Fig. 16 (Part #705 372 M91), into lower port on control valve on 100 and 200 Loader. Attach one end of hose (Part #705 661 M91) (51" x 5/8'~ to power­beyond fitting. Attach male end of coupling "A", Fig. 16, to other end of hose. Install fe­male end of coupler "B", Fig. 16, to hose (Part #705 651 M91) (81" x 5/8'~, other end to pres­sure port on backhoe valve.

Install return hose (Part #1400 315 M91) (1" x 110") to return port on backhoe, with male end of coupler "e", Fig. 16, on opposite end.

Install 1" x 450 elbow in loader sill reservoir port; install 1" x 3/4" reducer with 3/4" nipple to female end of coupler ''D'', Fig. 16.

CA UTION: The jUll-floating Pins used to attach the cylinder, boom and dipper stick are hardened steel. DO NOT DRIVE THESE PINS WITH STEEL

Fig. 17 - Assembly.of Backhoe

HAMMER. When installing pins, use lead hammer or wood block between pin and hammer.

1. The following instructions indicate "Left" or "Right" side from operation position on the backhoe seat.

2. Remove seat.

3. Install six valve links - to valve levers and to valve---Sec.!!1'e links, us~~ix 5/1_6~ 7/8" and six 5716"x 3/4" clevis pins and cotter pins. Relnstallseafin upright position.

4. Leave main frame attached to shipping skid.

5. Remove bOom (2) and dipper stick (3) from skid (Fig. 17).

6. Remove boom pivot pin (4) and boom lift cylinder pin (5) from mast assembly. Install boom assembly (2) to mast assembly using pin (4). SecUre pin, using shock absorber (6) ship­ped attached to mast assembly.

7. Attach boom lift 'Cylinder (8) to mast as­sembly, USing pin (5).

8. Install dipper stick (3) to boom (2), using pin (9). Attach dipper stick crowding cylinder (10) to dipper stick, using pin (11).

NOTE: Dipper stick can be installed without jacks or hois t by laying dipper stick on floor with bucket end toward mainframe. It can also be installed after the hydraulic system is installed as far as the boom cy linder and the boom can be hydraulically moved.

9. Attach hose (12) to left port of bucket cyl­inder. Attach hose (13) to right port of bucket cylinder, Fig. 17.

NOTE: The hoses that actuate the sta­bilizer cylinders, the rotaryswingcyl­inder and the front hoses (7), Fig. 17, of the crowd cylinder are connected and assembled before shipment from the fa ctory.

9

10

Fig. 18 - Backhoe Valve Hydraulics

Facing the valve, number the ports, as follows:

11 12

9 10

7 8

5 6

3 4

1 2

10. Attach hose (18) from No.7 port of valve to oil line going to right side of bucket cylinder. Attach hose (17) from No. 8 port of valve to oil line going to left side of bucket cylinder.

11. Attach hose (16) from No.2 port of valve to oil line going to right side of boom cylinder. Attach hose (15) from No. 1 port of valve to oil line going to left side of boom cylinder.

12. Attach hose (14) from No.6 port of valve to oil line going to right side of crowd cylinder. Attach hose (13) from No. 5 port of valve to oil line going to left side of crowd cylinder. Rein­stall tube hold-down clamp (21), Fig. 17.

CA UTION: It is of utmost imPortance thaFhoses(i3) and(T4) from theNo 's. 5 and 6 ports oj valve be ins talled as instructed above, otherwise, the crowd cylinder relief valve, located in the main control valve body, cannot junc­tion properly and may result in damage to the hydraulic system or to the entire machine.

13. Attach pressure hose (19) to pressure port of valve. Attach return hose (20) to return port of valve. Route hose back under seat, through coil spring retainer, which is to be at­tached to bracket under seat.

Install quick-couplers to hose; see Fig. 16.