1999 Alfa Romeo 146 fastener tightening specifications

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Condition	Value

expand_moreEngine tightening torques

expand_moreAir intake system

expand_moreIntake manifold


All Alfa Romeo diesel straight-4 1.9 L engines	15.49–19.18 lbf⋅ft15.49–19.18 lbf⋅ft21–26 N⋅m
All Alfa Romeo diesel straight-4 1.9 L engines	15.49–19.18 lbf⋅ft15.49–19.18 lbf⋅ft21–26 N⋅m
All other modifications	12.54–15.49 lbf⋅ft12.54–15.49 lbf⋅ft17–21 N⋅m

expand_moreAuxiliary assemblies

expand_moreAuxiliary drive belt tensioner

expand_more1.9 JTD with diesel straight-4 1.9 L AR 32302 103 HP at 4000 RPM, 255 N⋅m at 2000 RPM engine (1999.2–2001.1)


M8	16.96–20.65 lbf⋅ft16.96–20.65 lbf⋅ft23–28 N⋅m

expand_moreCarburetion


Injection nozzle (injector)	34.67–42.78 lbf⋅ft34.67–42.78 lbf⋅ft47–58 N⋅m

expand_moreCooling system


Coolant pump pulley	14.75–17.7 lbf⋅ft14.75–17.7 lbf⋅ft20–24 N⋅m

expand_moreCylinder head

expand_moreCamshaft bearing


Alfa Romeo diesel straight-4 1.9 L AR 33601 89 HP at 4100 RPM, 186 N⋅m at 2400 RPM	11.8–14.75 lbf⋅ft11.8–14.75 lbf⋅ft16–20 N⋅m
Alfa Romeo diesel straight-4 1.9 L AR 67501 89 HP at 4100 RPM, 186 N⋅m at 2400 RPM	11.8–14.75 lbf⋅ft11.8–14.75 lbf⋅ft16–20 N⋅m
All other modifications	9.59–11.8 lbf⋅ft9.59–11.8 lbf⋅ft13–16 N⋅m

expand_moreValve cover


1.9 JTD with diesel straight-4 1.9 L AR 32302 103 HP at 4000 RPM, 255 N⋅m at 2000 RPM engine (1999.2–2001.1)	5.9–7.38 lbf⋅ft5.9–7.38 lbf⋅ft8–10 N⋅m

expand_moreEngine block

expand_moreConnecting rod bearing

expand_moreAlfa Romeo diesel straight-4 1.9 L AR 32302 103 HP at 4000 RPM, 255 N⋅m at 2000 RPM


First stage	17.7–19.18 lbf⋅ft17.7–19.18 lbf⋅ft24–26 N⋅m
Second stage	60°60°60°

expand_moreAlfa Romeo gasoline straight-4 1.6 L AR 67601 118 HP


First stage	18.44 lbf⋅ft18.44 lbf⋅ft25 N⋅m
Second stage	60°60°60°

expand_moreAll other modifications


First stage	18.44 lbf⋅ft18.44 lbf⋅ft25 N⋅m
Second stage	50°50°50°

expand_moreCrankshaft central screws


Alfa Romeo diesel straight-4 1.9 L AR 32302 103 HP at 4000 RPM, 255 N⋅m at 2000 RPM	225.69–278.8 lbf⋅ft225.69–278.8 lbf⋅ft306–378 N⋅m
Alfa Romeo diesel straight-4 1.9 L AR 33601 89 HP at 4100 RPM, 186 N⋅m at 2400 RPM	133.5–147.51 lbf⋅ft133.5–147.51 lbf⋅ft181–200 N⋅m
Alfa Romeo diesel straight-4 1.9 L AR 67501 89 HP at 4100 RPM, 186 N⋅m at 2400 RPM	133.5–147.51 lbf⋅ft133.5–147.51 lbf⋅ft181–200 N⋅m
All other modifications	250.77–278.8 lbf⋅ft250.77–278.8 lbf⋅ft340–378 N⋅m

expand_moreCrankshaft pulley


Alfa Romeo diesel straight-4 1.9 L AR 32302 103 HP at 4000 RPM, 255 N⋅m at 2000 RPM	15.49–19.18 lbf⋅ft15.49–19.18 lbf⋅ft21–26 N⋅m
All other modifications	17.7–21.39 lbf⋅ft17.7–21.39 lbf⋅ft24–29 N⋅m

expand_moreFlywheel


All Alfa Romeo diesel straight-4 1.9 L engines	100.31–123.91 lbf⋅ft100.31–123.91 lbf⋅ft136–168 N⋅m
All Alfa Romeo diesel straight-4 1.9 L engines	89.25–109.9 lbf⋅ft89.25–109.9 lbf⋅ft121–149 N⋅m
Use screw-locking compound.
All other modifications	89.25–109.9 lbf⋅ft89.25–109.9 lbf⋅ft121–149 N⋅m

expand_moreMain bearing

expand_moreAlfa Romeo diesel straight-4 1.9 L AR 32302 103 HP at 4000 RPM, 255 N⋅m at 2000 RPM


First stage	17.7–19.18 lbf⋅ft17.7–19.18 lbf⋅ft24–26 N⋅m
Second stage	100°100°100°


All other modifications	70.81–87.77 lbf⋅ft70.81–87.77 lbf⋅ft96–119 N⋅m

expand_moreEngine control

expand_moreCamshaft timing gear


Alfa Romeo diesel straight-4 1.9 L AR 32302 103 HP at 4000 RPM, 255 N⋅m at 2000 RPM	75.23–92.93 lbf⋅ft75.23–92.93 lbf⋅ft102–126 N⋅m
All other modifications	73.76–91.46 lbf⋅ft73.76–91.46 lbf⋅ft100–124 N⋅m

expand_moreToothed belt guard

expand_more1.9 JTD with diesel straight-4 1.9 L AR 32302 103 HP at 4000 RPM, 255 N⋅m at 2000 RPM engine (1999.2–2001.1)


M6	7.38 lbf⋅ft7.38 lbf⋅ft10 N⋅m

expand_moreToothed belt tensioning roller


All Alfa Romeo diesel straight-4 1.9 L engines	31.72–39.09 lbf⋅ft31.72–39.09 lbf⋅ft43–53 N⋅m
All Alfa Romeo diesel straight-4 1.9 L engines	27.29–33.93 lbf⋅ft27.29–33.93 lbf⋅ft37–46 N⋅m
All other modifications	27.29–33.93 lbf⋅ft27.29–33.93 lbf⋅ft37–46 N⋅m

expand_moreToothed belt tightener


Alfa Romeo diesel straight-4 1.9 L AR 32302 103 HP at 4000 RPM, 255 N⋅m at 2000 RPM	30.98–38.35 lbf⋅ft30.98–38.35 lbf⋅ft42–52 N⋅m
Alfa Romeo diesel straight-4 1.9 L AR 33601 89 HP at 4100 RPM, 186 N⋅m at 2400 RPM	27.29–33.93 lbf⋅ft27.29–33.93 lbf⋅ft37–46 N⋅m
Alfa Romeo diesel straight-4 1.9 L AR 67501 89 HP at 4100 RPM, 186 N⋅m at 2400 RPM	27.29–33.93 lbf⋅ft27.29–33.93 lbf⋅ft37–46 N⋅m
All other modifications	15.49–19.18 lbf⋅ft15.49–19.18 lbf⋅ft21–26 N⋅m

expand_moreEngine lubrication


Oil drain plug	12.54–15.49 lbf⋅ft12.54–15.49 lbf⋅ft17–21 N⋅m

expand_moreOil sump

expand_moreAll other modifications


M6	5.16–6.64 lbf⋅ft5.16–6.64 lbf⋅ft7–9 N⋅m
M8	15.49–19.18 lbf⋅ft15.49–19.18 lbf⋅ft21–26 N⋅m

expand_moreEngine management


Glow plugs	9.59–11.8 lbf⋅ft9.59–11.8 lbf⋅ft13–16 N⋅m
Lambda sensor	29.5–36.88 lbf⋅ft29.5–36.88 lbf⋅ft40–50 N⋅m

expand_moreExhaust system

expand_moreExhaust manifold


All Alfa Romeo diesel straight-4 1.9 L engines	15.49–19.18 lbf⋅ft15.49–19.18 lbf⋅ft21–26 N⋅m
All Alfa Romeo diesel straight-4 1.9 L engines	15.49–19.18 lbf⋅ft15.49–19.18 lbf⋅ft21–26 N⋅m
All other modifications	12.54–15.49 lbf⋅ft12.54–15.49 lbf⋅ft17–21 N⋅m

expand_moreIgnition system

expand_moreSpark plugs


M10	11.06 lbf⋅ft11.06 lbf⋅ft15 N⋅m
M14	20.65 lbf⋅ft20.65 lbf⋅ft28 N⋅m

expand_morePower transmission tightening torques

expand_moreClutch


Clutch pressure plate	14.75–18.44 lbf⋅ft14.75–18.44 lbf⋅ft20–25 N⋅m

expand_moreSuspension front tightening torques

expand_moreFront axle brake


Bleed valve	2.95–4.43 lbf⋅ft2.95–4.43 lbf⋅ft4–6 N⋅m

expand_moreBrake hose


At the brake caliper	11.06–14.01 lbf⋅ft11.06–14.01 lbf⋅ft15–19 N⋅m
At the brake line	9.59–11.06 lbf⋅ft9.59–11.06 lbf⋅ft13–15 N⋅m


Brake line	2.95–4.43 lbf⋅ft2.95–4.43 lbf⋅ft4–6 N⋅m
Front axle brake caliper	22.86–28.03 lbf⋅ft22.86–28.03 lbf⋅ft31–38 N⋅m

expand_moreFront axle brake caliper mounting support


M6	42.04 lbf⋅ft42.04 lbf⋅ft57 N⋅m
M8	77.44 lbf⋅ft77.44 lbf⋅ft105 N⋅m


Front axle brake disc	3.69–9.59 lbf⋅ft3.69–9.59 lbf⋅ft5–13 N⋅m

expand_moreFront axle steering


Steering gear	77.44–85.56 lbf⋅ft77.44–85.56 lbf⋅ft105–116 N⋅m
Track rod end on stub axle	21.39–26.55 lbf⋅ft21.39–26.55 lbf⋅ft29–36 N⋅m
Track rod end on track rod	22.13–27.29 lbf⋅ft22.13–27.29 lbf⋅ft30–37 N⋅m

expand_moreWheel suspension


Wheel hub wheel bearing	206.52 lbf⋅ft206.52 lbf⋅ft280 N⋅m

expand_moreWheels and tires


Wheel attachment	61.22–75.97 lbf⋅ft61.22–75.97 lbf⋅ft83–103 N⋅m

expand_moreSuspension rear tightening torques

expand_moreRear axle brake


Brake drum	3.69–9.59 lbf⋅ft3.69–9.59 lbf⋅ft5–13 N⋅m
Rear axle brake caliper	14.75–18.44 lbf⋅ft14.75–18.44 lbf⋅ft20–25 N⋅m
Rear axle brake caliper mounting support	36.14–44.25 lbf⋅ft36.14–44.25 lbf⋅ft49–60 N⋅m
Rear axle brake disc	3.69–9.59 lbf⋅ft3.69–9.59 lbf⋅ft5–13 N⋅m

expand_moreRear axle wheel suspension


Wheel hub wheel bearing	196.19–216.84 lbf⋅ft196.19–216.84 lbf⋅ft266–294 N⋅m

expand_moreWheels and tires


Wheel attachment	61.22–75.97 lbf⋅ft61.22–75.97 lbf⋅ft83–103 N⋅m

When assembling your 1999 Alfa Romeo 146 it's important to tight threaded fasteners with Alfa Romeo prescribed torques using a torque wrench. If the torque values is lower then prescribed, bolt may unscrew itself and assembly may fall apart. If the torque value is higher then prescribed, bolt may simply break. The torque wrench allows you to tighten all bolts of the assembly with the same torque applied.

Please be noted that all capacities listed here are approximate. Check fluid levels when adding or refilling as recommended in your 1999 Alfa Romeo 146 user's manual. Keep in mind that all information here is provided “as is” without any warranty of any kind.

Before doing any DIY service please check your insurance policy and Alfa Romeo warranty policy for your region. In some regions DIY service may invalidate your warranty.

Maintenance Items

Fastener Tightening Specifications

Service Intervals

Conquer your fears and never give up!

DIY car service is not as difficult as it looks like and it might save you thousands of dollars per year. It might be even fun and a good thing to do with your kids on a weekend to teach them how basic machinery works. It's really hard to screw something up and damage your car permanently if you use right tools, follow Alfa Romeo 146 service manual and use right parts and fluids in prescribed amounts. Even modern cars stuffed with electronics can be serviced in your garage or even in your driveway. Changing engine oil, brake fluid, ATF, replacing brake pads, and etc. It's all may be done by yourself in a mater of a couple of hours.

Doing basic service for your 1999 Alfa Romeo 146 you're not only saving money, but also also improving your technical skills and learning something new.

1999 Alfa Romeo 146 Series 3 Fastener Tightening Specifications

Table of Contents

Conquer your fears and never give up!

Alfa Romeo 146 Series 3 model years

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