MANUAL STEERING GEAR

JdodeJe 88b, 886N, 995 aoü 12G0 may be equipped with manual steerhig and tire steering gear assemblies are shown in exploded vieys 17, 18 and 19. For taodels equipped with Hydrostatic ateerfiig, refer to the Power Steering System section of this manual.

Remove And Reinstall

Models 665, 885N and 9s5

30. To removesteering gear, remove lever from lower end of Fund throttle shaft, unscrew Nylocb nut on ahaft at undersideofpanelandwithdraw throttle shaft from instmiment panel Remove hood, then remove the two rear bolte securing tuel tank support braeh• etstoclutch housing. Raise instrument bolta, then teinstalt rear holte under bracketstoboldrearof taahdclear steeringgearhousingbolte.Disconnect drag Side bozo steerJog am, zeaove trazazaJssloo tag cover, tüea lift oü gteezlag geaz asaeahly aaü zetcieye tke two üoeel riaga.

'I'he oil suzag for eteertag gesz is la the transmission top tover and because there is ao filter plug, sumg rtirat be filled before reinatalliag steering gear unit. Fillsump to amaximum of 1-inch below face of transmission top cover. Rein•bü steerbg gar aeembty bp reverflogmmovstpnre‹hre.

3l. To remove steering gear unit, firstremosehood,thendrainsteering geez' houaiog. Discoaaact coatrols aat wiring to instrument panel. Unbolt throttle lever shaft bmebet koin steering gear housing, them unbolt and remove fuel tanL and instrument panel as a, unit Unbolt and remove the aion cover.

When reinstalling unlt, tighten bolts to a to*que of 75 ft.-lbs. and fill steering gear tn level of filler plug with proper lubricant.

Overnaul Steering Qear

All Modele So Equlpped ß2,,Refertoexploded viewoftypical ze oVe a0oW aut (12) aqd uafag a guller, rezaove eteezlag wbeet A•oza steeriag eliaft (5). Remove \Y'oodruff hey and dirt escluder (11), remove gut (10), then uneerew upper bearing nee 19} and remove the twelve loose bearing balls (8).

Refer to Fig. 17 for Models ß8S and 88iiN: to Fig. 18 for Model 986; or to Fig. 19 to* Model 1210. ltemeve the four tap screws and both pegs (18 Fig. 18 or 23-Pigs. 17 and 18), then withdraw the steering sbntt and ball nut assembly from bottom ot unit.

I.ower beazlag Mace (7-Eig. 18) aaü egBezical seat I6J eea aow be zemoveü mom steering column and rubber battle 14) from steering sbak. Unscrew ball nut assembly trout steering shaft and retrieve the 28 louae ateel balls (1).

On models exeept 1210, remove eotter pin (33-Fig. 17J, or loéating screw{80-Fig.18}andwithdrawcress shaftandsteeringarmasaunit.£in bfodel1510,refertoFig.19Andremove end cover lS6), split thrust

Paragraphs 33-34

washer (25), sbime (24) and bolt {33). Withdraw crosa shaft and steering arm. Be eareM not to lose any of the shins

If cross shaft bushings are to be renewed, be sure to note their *tee and location so new ones ear be installed

On all models except 1210, be sure that lubrication holes. iii bushings And geBebñx are aligned. Cross shaft muct not bind in installed bushings: with stop down. Reinstall eroeB and secure with cotter pin. locating aerew or bolt. 0s Model 1210. install “O” nag, shizas, split thrust plate aqd end cover aqd wry the ehizns ao Aeceesary to centey rocker arza in tf‹a boveiog. Sbizaa see available ia thickaeeses of 0.003, 0.005, 0.010 pad 0.030 lnetali one ball nut peg {29A-Fig. 20) without shims and tighten the two cap screws securely. Install secondball nut peg (39B) without shima and tighten the two cap sinews evenly until inner end of peg bindsball nutlightly. Using aleelergage,measuregsp(G)between ball nut peg (29B) and roci:er arm 181). The ahims to beueed in final assembly shouid be 0.001 to 0.00d inch less than measured gap lG) and divided equailg as possible for iostalutiog uaaer eaclt bailnut peg. The shims areavailable in tbicknesaea of 0.005, 0.00ii, 0.007 and 0.010 inch. After the ball nut pega are reinstalled with proper number of s , n e our cap screws securely andbendlocktabsagainstthe cap screw heads. When installing drop arms, align osarks on drop arm and loaert sghezical seet (6-E’ig. 18) witb Bat face down, then install lower race (7) with round lace in spherical sest. Witb bearing race goaitioned just below groove in steering column, drop in the ten loose bearing balls (8). Inetall new “0” ring in groove on upper race (9), theo thread ugper race onto steering shatt eo as. to remove all plsy from bearing, yet allow shatt tn turn freely. Back od upper bearing race 1/8-turn to gzovide 0.000-0.00S iacb end pley of steering afiatt, hold upper

To reassemble, remove ball nut tuhe (2-E’ig. JB) 6oa ball out sod grace nttt overballtrackon lowerend ofsteering Bh8›N. Insert steel halts into nut until track is filled; removing oil kom all parts and turning steering shaft back and forth will aid in filling the tracts. Stick remainder of steel balis into tube (2) with grease and fit tube to nut. Place rubber batfle in groove on steering shaft and insert shaft up through housing.

NOTE' The lockau! has a recess on one side which must be Iltted egaln*t upper barring secs. Install am excluded (11), Woodniff day and steering wheel. Tighten scorn nut to not more than 2o

Drag Link

All Models

33. Drag link ends are of the now-adjustable automotive type and must be renewed an a complete untt. Adjustlength of drug linkitsteering gaaz internal stop contacts before spindle contacts atop on axle extension. If new drag linh ends are installed, act the center to center distance of drag linir ends as follows: 885, 48.0 inches; 99i3, 46.Sfi inches: lS10, 52.ii incbee.

Power Steering

sky a*•ñwhbAsMndok MA RM *md 12I0wm• m*1emmnamA$w W* 1H04WD,32I3,14l0*mdlfl2mndNm

J ICASE (DAVID BROWN)

1210 and 1212, 121ti 4HD, 1dI0 cad 74I2 modela keye steering ejrkadeze a'IzIeb are tmaas'eree aiouated.

azodelg are Cbe eazae.

fiafar to Fig. 21 fer g ec6eaiatis vice ebowiag tbe baate gower eteertag

Fluid And Bleeding

Side Mounted Cylinders and 1210 4WD

34. £"Ig reservoir to wJtkia 8/8-iocb at fdlat ego oa bfodet 885 Tractors. or to levél of ftlIer bale oa att otber zaodele. Uae e good grade 106 aft.

RMse front of tractor uat2 Port mhees cear t6e grouod. tbeb or

•a integrd purt ct the pump. 8tearing hinders Jor Hodale 885, ii95 und some 1210 •nd 1212 are nide ntunte&.

Paragraphs 35-39

Model 885 only, place throttle control gg6d if VaIV8 TB IBIt In closed position on pump, remove pulley (18) Bad key, for more than a few seconds. If gege then unbolt and reraove bearing reLaJnreading \s wlthin 40 pst of nomal er (17) andbracket (16). system pressure with shut•oIf ralre ReioetaTl by reverting zeznoval proeefully closed, pump and reTlef valve are dune and bleed systezu as outfiaed la OK and any trouble is located in the paragraph 34. steering cylinder and control *alva.

NOTE: Pump may be seriously dam- If lurthez service is to be performed in 9TOP position and use starter to tura eagioe over for 10 to 15 seconde to grìzne putap. Recheck oil \evet in resezvolc. 0a all zaodels, atazt eqgiae aad nei at idee speed. Tum steerìag a'heeJ ooe M tura ia each dizectioa aeveral tünes but do not. allow tront wheele to reacli stops. Recheck reservoir level. With engine atill running at idle speed, turn steering wheel until front wheels reach stops in both directions several times. Do not hold froat wheels against stops for more than a tew seconds at a time.

Lower front of tractor and again checE reservoir level.

Transverse Mounted Cyllnders (Èxcept 1210 4WD)

35. Fill pump reservoir to level of ffliez hale, if neceesazy. Raïse front of tractor until front wheels clear the ground, then start engine and run at idle speed. Loosen bleed screw on top Bert side of steering cylinder one full turn, turn steering wheel right until front wheels reach their stop, then tighten the lett hand bleed screw. Loosen bleed screw or top right side of steering cylinder one full ttirn, turn steering wheel left until front wheels reach their stop, then tighten the right hand bleed screw. Turn front wheels from stop-to-stop several times and check operation. Repeat above procedure it operation is not satisfactory. Stop engine, lower trout wheels to ground, then check and retill reservoir as.necessary.

System Operating Pressure

All Models

36. A pressure test ot the power steering circuit will disclose whether the pump, relief valve or some other unit in the system is maltunctioning. To check system pressure, proeeed as tollows:

Connect a pressure test gage and shut-off valve in series with the pump pressure line and be sure the pressure gage is connected in the circuit between the shut-off valve anñ pump. Open the shut-off valve and bleed the system as in paragraph 34 or 35. Operate engine at slow idle speed until fluid is at normal operating temperature. 2'hen, with engine running at fast idle speed, close the shut-off valve and retain in closed position only long eqough to observe reading 'hich shoulä pressure gage be as follows:

Model 885 l with separate reservoir), 700 pst; all other models (with integral reservoir),1000 pst.

If gage pressure is excessively high, relief valve is probably stuck in closed position or incorrectly installed in valve bore. It gage pressure is more than 40 psi below normal system pressure, adjustment shims should be added in the gear type .pump, or a new relief valve assembly should be installed in the roller vane type pump. If gage preseure etili remains low, piimp should be overbauled.

R & R PUMP

Model 885

37. Bemove pulley guard 119 "ig. 22), then clean pump and surrounding area. Plate a suitable container under pump, disconnect pump inlet and bypass hoses and the connectionat outlet line. Loosen tire tw,o cap screws attaching pump bracket (1B) to tractor frame, slide bracket downward to slacken drive belt, then eemove belt from pulley. Complete femoral of attaching cap screws and remove pump and bracket assembly.

38. RESERVODt. To remove' reservoir, place a suitable container under reservoir (33), remove inlet and by-pass hoses and drain reservoir, Unbolt and remove reservoir from support bracket 131).

R'eïnataü reeezvoir by reversiog the removal procedure and bleed system as out\ineü inpazagmT,h 34.

All Other Models

39. Clean exterior of pump xnd the surrounding area. Shut off tuel, remove lines kom fuel pump, then unbolt and remove the fuel puiap. Loosen alternator mounting bolts, disconnect alternator adjuster strap and remove drive belt, then suing alternator upward and tighten alternator holts to retein alterqator in tips T osition. Make provisioq to catch oü and äisconnect inlet and outlet lines b•om pump. Unbolt pump from engine front plate, withdraw pump rearward until it clears timing gear and lift ott gump. Remove and discard gasket(2-Fig. 26).

Reinstall by reversing removal proce-

@.

Paragraphs 40-42

dure and bleed system as outlined paragraph 34 or 3S.

Overhaul Pump

Model 885 (Roller Pump)

4tI. Clean pump and place a eeribe line across pump halves and mounting bracket to aid in reaseembly. Remove pulley and key, then remove bearing retainer (17-Fig. 22) and mounting bracket {l8}. Remove cap screws and separate rear cover (3) from body. Remove rollers (91 and carrier (81 ixom body. then remove drive pin (101 from shaft. Bemove cam ring (7) and cam ring lock pin (12), tiien using a soft faded hammer, bump shaft (IU and bearing (15) for ward out of body. Reraove bearfag mom sGsft and oil eeal (14) froot body. Discard "0" ring (6). Remove glug (22), Stow eoctroJ v&ve (gt) pad sprlag (95). Discard “O" nag t29I.

Clean and inspect all parts. If pump body or cover is renewed, new ports are fitted with bushings although bushings are cataloged Separately. Cheek cam (7), carrier (8J and rollers (9) aseembly as follows: Install cam locking pin (12) in body. install caa zo slot in cam engages locking pin and casa eegts ttt pocket, then plaee cazziez in caoi ao that larger angle (A-£''Jg. M) is toward dñ'ectioa of gump zotatioo. Place rollers in slots o1 carrier, them using a straight edge across face of hody as shown in Fig. 24, measure clearance between earner and rollers and straightedge. If clearance'exceeds 0.OOH inch, new earn, carrier and rollers must be installed as an assembly as they are not available separately. Iasge•t pumg rhalt and bearing tar wear or other signs oI dazasge. It bearing is rough or excessive grease has seeped out, renew bearing. Flow control valve apring (25) should test &9 lbs. when compressed to a length of 0.82 inch.

NOIE: The pump pressure relief valve Is located inside thg flow contro) ralve apooT 8g shown in Fig. 25. The valre is non•ag}ustabfe and the praseure pteset at the factory. No attempt should be maae la disassemble relief ralve. If neoassary to correct pump relief pres• sure \700 psi), renew the complete flow oontroT valve spool.

J ICASE (DAVID BROWN)

41. Reassemble pump as follows: Install new oil seal (14-Fig. 2Z) in bodg with lip toward instde and lubricate tip of seal Press bearing (15) on shaft (II) and install ahatt and bearing in pump God . install 1ocia»g pin (12) in body, then align slot in cam (7j with pin and seatcaminpocket.Placedrivepin (10) in slot of ahaft 111), then install tarriez (8) so widest angle of roller slots are toward direction of pump rotation as shown in Fig. 23. Install rollers (9-Fig. â2) in slots of carrier. Install “O” ring in groove ot body, then with “0" ring {5) in place, install cover (3} and tighten retainiag up arews eveoty to 18 It.-lbs. torque. Install mountin g bracket (16) and bearing retainer (17) and tighten retaining cap screwe securely. Install pulley hey and puiley and tighten pulley retaining cup screw to 20 It.-lbs. torque. Insert spring (2SJ, flow control valve spool (stem end outJ, then with new “0” ring (23J. install plug (22) and tighten seewely.

All Other Models (Gear Pump)

42. Hold pump assembly over a container. remove center bolt and pull reservoir {16-Fig. 26) mom pump body {23). Lilt oti tilter element (171. Straighten tab of lock washer (4), remove nut (31. then using a puller, reraove drive gear (5) azid Woodruff key (IS}.

NOFE: 0o not drlre on end of shaft aa damage to bearings (IO gnp 22) ¢ould •esult. fIemove the leuz through bolts and separate coyer (2o) ano mounting flange (8) trem pump body f28). If neceasa/y. tap coyer lightly with dowels {24}. TdentTfy bearings {10 and z2j »o tnay can be relnstalTed In their oñglnal positions and remore bearlns•