REPAIR INSTRUCTIONS, PART 2

Unit Injector Cleaning

Prel¡minary Sleps

Rem@ lhe ioll@ing .omponents rom thé ángine (s€é ENGINE DISASSE¡¡BLY ior

. Cy inder l¡@d Cove¡

. Rocker Arn ShanA$embly lnslalllhé s¿áling plug,9998251, inlo th¿ u¡it iñiector bore ol the cyl ndér héád io pfaént dirt and debris foñ entering lhe bo€,

Cleaning and Inspect¡on

Note

Since the lnil iñjectors opeEle at very h¡gh tue injeclion pEsures,lhé no2zlolip spEy holes añd lhe inmédiale a¡ea around the spEy holás rehain cl6an and l¡é6 ol @|bon depG¡ls. This leaves the cap nut seai suffacB as lhé ónly sudas which requires a thorouqh cleañinq.

cleán rhe injeclor cáp nut surface 6lotl@s:

1. Fen@ lhe two Ojiñgs foñ the ¡njector ánd d¡scard th€ O{ings.

2. Cov€r lh€ O{ ns g@@es and the conplete arca between the qroóvés with lapá o¡ equi€lenl lo prdent conlaminanls lrom q6lling inlo lhé iniecloi

3. Cdérlhé opéning lorll)e elect.i€l

4- Sr¡de a shoii séctióñ of 6 mm {0.25 inch) lD hose over lie injeclor nozzle lip untl il cov€B apprcÍmalely halt lhe nozzle 1¡p length. Thls is ñécassary ro prcrecl lhe no¿le sp€y hobs nom dámaséwhen cl€aning lhe cap ñul sal suface.

FisúÉ ¡r23rn:brrins ¡n¡sdo' BoE s¿ar.E Pruq,

REPAIR INSTRUCTIONS, PART 2

5. with th€ unil iñjéclor nozzle lip sp6y holes prolected, Éretullv d€ú lh¿ €p nln seal sulace of hard caóon deposits úsing a wlb whsl. Apply o¡ly ligh¡ nominalprasué ló hold lh€ wiré whéél agaiEt lhe injector suÉáce tor short périods ót llmé.

cl6aD any @maining @rb;n tjs¡nd hañd lools slch a a hand MEper or medium

Frsu6 425 - Cr..n¡nq rñl.0ror c,p Nor s6r srÍac.

AcaurroN

rhe@úonwi be very had añ d¡fi¡@ü ¡o mow. Aw¡d the I dercy to @ qc*g¡ve p@e ¡n hald¡ng ¡lÉ wlre wh@l aga¡nst lhe ínjé.tü úp nut Eurta@. E@4¡@ lot@ @n danúge ¡ha cap nú tucé, naking ¡lB kjectü

Note

Ailer clean¡nq, iñspecl th€ iniácto. nozle cap nul seal6ufla@ bf pttiñq or €laléd dáñage. lf lhée i! piting or olher danage, Piting on sufaces olher lhan thó €p nd s6ar does ñol atfecr rhe tuncüon ol rhe unir i¡jeciof and

3, lnsrall new o rings ¡¡ rhe gfooves o¡ me

9. Lubncale rhe injslor Ojings wilh clean

F¡ñal Steps lnslallthé ñ.llowhq 6ñpoñéñts on lhá é¡gine {s@ ENGINE FEASSEMBLY lor pócedur6s):

. Rocker Arm Shaft Assoñbly

. CllinderÉ4d C¡rer