Engine JAC HFC4DA1-2C. Service manual — part 14

Maintenance manual for sunray hfc4da1-2c china-IV diesel engines

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m. Install the EGR cooling steel pipe and tighten the

fixing bolts.

n. Install the EGR valve and tighten the fixing bolts.

o. Apply sealant onto the thread of vacuum pump oil

inlet pipe connecting bolts, install the connecting

bolts onto the cylinder block oil outlet, and tighten to

18±2 N.m.

p. Install the alternator belt and water pump pulley.

q. Install the fan and clutch assembly and install and

pre-tighten the clutch fixing nuts.

Tighten bolts as per sequence shown in figure.

Maintenance manual for sunray hfc4da1-2c china-IV diesel engines

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r. Adjust the tension of alternator belt and tighten the

alternator adjustment bolts and clutch fixing nuts.

s. Tighten the alternator fixing nuts.

t. Install the vacuum pump oil inlet pipe fixing bolts I

(M8×20) and tighten the fixing bolts to 18±2N.m and

25±5N.m respectively.

u. Install the exhaust pipe heat shield and install and

tighten the fixing bolts.

v. Install the power steering pump and tighten the fixing

bolts of power steering pump.

Maintenance manual for sunray hfc4da1-2c china-IV diesel engines

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w. Install the compressor bracket and tighten the bracket

fixing bolts.

x. Use perforated bolts II and copper washers II to install

the turbocharger oil inlet pipe assembly onto the

turbocharger oil inlet and use perforated bolts I and

copper washers I to install another end onto the

cylinder block oil hole and tighten the perforated

bolts I and II. 1. Tightening torque for perforated

bolts I is 55±10N.m; 2. Tightening torque for

perforated bolts II is 41±6N.m.

y. Install the fuel-gas separator bracket and intake

manifold bracket.

z. Install the fuel-gas separator assembly.

Maintenance manual for sunray hfc4da1-2c china-IV diesel engines

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aa. Install the VNT electromagnetic valve and connect

various vacuum hoses.

10. Install the flywheel and related
accessories.

a. Apply oil to the outer ring and lip of the crankshaft

rear oil seal and use installation jig I to push the rear

oil seal into the oil seal groove. Then install the

installation jig II and knock with steel hammer lightly

and uniformly to install the crankshaft rear oil seal to

place.

b. Install the flywheel baffle and fixing bolts and tighten

the fixing bolts of flywheel baffle to 85±10 N.m.