Replacement Interval Guide
- Alfa Romeo recommend:
- 145/146/155:
- Check every 48,000 miles or 4 years.
- Replacement every 72,000 miles or 6 years.
- 147:
- →07/07:
- Replacement every 36,000 miles or 3 years.
- 08/07→:
- Replacement every 36,000 miles or 5 years under normal conditions.
- Replacement every 36,000 miles or 4 years under adverse conditions.
- 156/Spider/GTV:
- Replacement every 36,000 miles or 3 years.
- The previous use and service history of the vehicle must always be taken into account.
Check For Engine Damage
CAUTION: This engine has been identified as an INTERFERENCE engine in which the possibility of valve-to-piston damage in the event of a timing belt failure is MOST LIKELY to occur. A compression check of all cylinders should be performed before removing the cylinder head(s).
Repair Times – hrs
Remove & install: | |
---|---|
145/146 | 2,75 |
155 | 2,75 |
156 | 2,25 |
Spider/GTV | 2,75 |
Special Tools
- 1,4: Camshaft locking tool – Alfa Romeo No.1.825.042.000
- 1,6 (105 HP/77 kW): Camshaft locking tool – Alfa Romeo No.1.870.797.000.
- 1,6 (120 HP/88 kW): Camshaft locking tool – Alfa Romeo No.1.870.734.000.
- 1,8: Camshaft locking tool – Alfa Romeo No.1.825.041.000.
- Crankshaft sprocket adaptor – Alfa Romeo No.1.820.618.000.
- Except 147: Inlet camshaft holding tool – Alfa Romeo No.1.822.155.000.
- 147/156: Inlet camshaft holding tool – Alfa Romeo No.1.822.156.000.
- Exhaust camshaft holding tool – Alfa Romeo No.1.822.146.000.
- Timing belt tensioning tool – Alfa Romeo No.1.822.149.000.
Special Precautions
- Disconnect battery earth lead.
- DO NOT turn crankshaft or camshaft when timing belt removed.
- Remove spark plugs to ease turning engine.
- Turn engine in normal direction of rotation (unless otherwise stated).
- DO NOT turn engine via camshaft or other sprockets.
- Observe all tightening torques.
Removal
- Remove:
- RH front wheel.
- Engine cover.
- Auxiliary drive belt.
- Auxiliary drive belt guide pulley [1] .
- Crankshaft pulley [2] .
- Timing belt upper cover [3] .
- Ignition coils.
- Cylinder head cover [4] .
- Centre spark plug – cylinder No.1.
- Insert dial gauge in No.1 cylinder centre spark plug hole [5] . Turn crankshaft slowly to TDC on No.1 cylinder.
- Ensure marks on belt aligned with marks on sprockets [6] & [7] .
- Slacken timing belt tensioner nut [8] .
- Remove timing belt.NOTE: Mark direction of rotation on belt with chalk if belt is to be reused.
Installation
- Ensure crankshaft at TDC on No.1 cylinder. Use dial gauge [5] .
- Hold camshaft sprockets. Except 147: Use tool Nos.1.822.155.000 & 1.822.146.000. 147: Use tool Nos.1.822.156.000 & 1.822.146.000 [9] & [10] . Slacken bolt(s) of each camshaft sprocket.
- Except 147: Remove third bearing cap from each camshaft [11] & [12] .
- 147: Remove second inlet camshaft bearing cap and third exhaust camshaft bearing cap [16] & [17] .NOTE: Mark bearing caps before removal for identification.
- Fit locking tools in place of bearing caps [11] & [12] or [16] & [17] .
- 1,4: Tool No.1.825.042.000.
- 1,6: Tool No.1.870.797.000 or No.1.870.734.000.
- 1,8: Tool No.1.825.041.000.
NOTE: Ensure locking tools aligned with respective cam profiles to prevent damage. Before fitting belt ensure camshaft sprockets turned fully clockwise.
- Fit timing belt in anti-clockwise direction, starting at crankshaft sprocket. Ensure directional arrows point in direction of rotation.
- Ensure marks on belt aligned with marks on sprockets [6] & [7] .
- Tension timing belt to maximum. Use tool No.1.822.149.000 [13] .
- Tighten tensioner nut [8] .
- Hold camshaft sprockets. Except 147: Use tool Nos.1.822.155.000 & 1.822.146.000. 147: Use tool Nos.1.822.156.000 & 1.822.146.000 [9] & [10] .
- Tighten bolt(s) of each camshaft sprocket.
- (A) Except 147: 100-124 Nm.
- (B) 147: 108-132 Nm.
- (A) M6 bolts – except 156: 10 Nm.
- (B) M6 bolts – 156: 12 Nm.
- Remove:
- Dial gauge [5] .
- Locking tools [11] & [12] or [16] & [17] .
- Fit bearing caps in correct locations.
- Lubricate camshaft bearing cap bolts. Tighten bolts. Except 147: 13-16 Nm. 147: 14-17 Nm.
- Turn crankshaft two turns clockwise to TDC on No.1 cylinder [6] . 156: Use tool No.1.820.618.000.
- Ensure timing marks aligned [6] & [7] .
- Fit tensioning tool [13] . Tool No.1.822.149.000.
- Slacken tensioner nut [8] . Turn tensioner anti-clockwise until pointer [14] aligned with hole [15] .
- Tighten tensioner nut [8] .
- (A) Except 147: 21-26 Nm.
- (B) 147: 23-28 Nm.
- Turn crankshaft two turns clockwise to TDC on No.1 cylinder [6] .
- Ensure timing marks aligned [6] & [7] .
- Install components in reverse order of removal.
- Tighten crankshaft pulley bolts. Tightening torque: 24-29 Nm.