Mazda MX-5 Miata Sport 2007 User manual

2006-08 ENGINE
Mechanical - Overhaul - 2.0L (LF) & 2.3L (L3) - Mazda6 & MX-5 Miata
ENGINE IDENTIFICATION
Engine can be identified by engine model and number
ENGINE IDENTIFICATION CODE
MECHANICAL
ENGINE OVERHAUL SERVICE WARNING
ENGINE MOUNTING/DISMOUNTING
1. Install the SSTs (arms) to the cylinder block holes as shown, and hand-tighten the bolts (part No.:
9YA20-1003) or M10 x 1.5T length 90 mm {3.55 in}.
Engine Code
2.0L 4-Cylinder LF
2.3L 4-Cylinder L3
WARNING: Continuous exposure with USED engine oil has caused skin cancer
in laboratory mice. Protect your skin by washing with soap and
water immediately after this work.
2007 Mazda MX-5 Miata Sport
2006-08 ENGINE Mechanical - Overhaul - 2.0L (LF) & 2.3L (L3) - Mazda6 & MX-5 Miata
2007 Mazda MX-5 Miata Sport
2006-08 ENGINE Mechanical - Overhaul - 2.0L (LF) & 2.3L (L3) - Mazda6 & MX-5 Miata
Microsoft
Thursday, July 09, 2009 2:43:24 PM Page 1 © 2005 Mitchell Repair Information Company, LLC.
Microsoft
Thursday, July 09, 2009 2:43:30 PM Page 1 © 2005 Mitchell Repair Information Company, LLC.

Fig. 1: Installing SST (Arms) To Cylinder Block Holes
Courtesy of MAZDA MOTORS CORP.
2. Assemble the SSTs (bolts, nuts and plate) to the specified positions.
3. Adjust the SSTs (bolts) so that less than 20 mm {0.79 in} of thread is exposed.
4. Make the SSTs (arms and plate) parallel by adjusting the SSTs (bolts and nuts).
2007 Mazda MX-5 Miata Sport
2006-08 ENGINE Mechanical - Overhaul - 2.0L (LF) & 2.3L (L3) - Mazda6 & MX-5 Miata
Microsoft
Thursday, July 09, 2009 2:43:25 PM Page 2 © 2005 Mitchell Repair Information Company, LLC.

Fig. 2: Assembling SSTs (Bolts, Nuts And Plate) To Positions
Courtesy of MAZDA MOTORS CORP.
5. Tighten the SSTs (bolts and nuts) to affix the SSTs firmly.
Fig. 3: Identifying SST Bolts, Nuts & Parallel Plates
2007 Mazda MX-5 Miata Sport
2006-08 ENGINE Mechanical - Overhaul - 2.0L (LF) & 2.3L (L3) - Mazda6 & MX-5 Miata
Microsoft
Thursday, July 09, 2009 2:43:25 PM Page 3 © 2005 Mitchell Repair Information Company, LLC.

Courtes
y
of MAZDA MOTORS CORP.
6. Mount the engine on the SST (engine stand).
7. Drain the engine oil into a container.
8. Install the oil pan drain plug.
With washer
1. Install the oil pan drain plug with a new washer.
Tightening torque
30-41 N.m {3.1-4.1 kgf.m, 23-30 ft.lbf}
Without washer
1. Inspect the seal rubber of the oil pan drain plug and make sure there are no cracks or damage.
- If necessary, replace the oil pan drain plug.
2. Clean the flange surface (seal rubber) on the oil pan drain plug, then install the oil pan drain
plug.
Tightening torque
22-30 N.m {2.2-3.1 kgf.m, 16-22 ft.lbf}
DISMOUNTING
Dismount in the reverse order of mounting.
TIMING CHAIN DISASSEMBLY
1. Disassemble in the order indicated in the table.
WARNING: Self-locking brake system of the engine stand may not be
effective when the engine is held in an unbalanced position.
This could lead to sudden, rapid movement of the engine and
mounting stand handle and cause serious injury. Never keep
the engine in an unbalanced position, and always hold the
rotating handle firmly when turning the engine.
2007 Mazda MX-5 Miata Sport
2006-08 ENGINE Mechanical - Overhaul - 2.0L (LF) & 2.3L (L3) - Mazda6 & MX-5 Miata
Microsoft
Thursday, July 09, 2009 2:43:25 PM Page 4 © 2005 Mitchell Repair Information Company, LLC.

Fig. 4: Exploded View Of Timing Chain Components
Courtesy of MAZDA MOTORS CORP.
Crankshaft Pulley Lock Bolt Disassembly Note
1. Install the SST to the rin
g
g
ear to lock the crankshaft a
g
ainst rotation.
2007 Mazda MX-5 Miata Sport
2006-08 ENGINE Mechanical - Overhaul - 2.0L (LF) & 2.3L (L3) - Mazda6 & MX-5 Miata
Microsoft
Thursday, July 09, 2009 2:43:25 PM Page 5 © 2005 Mitchell Repair Information Company, LLC.

Fig. 5: Installing SST Ring Gear To Lock Crankshaft Against Rotation
Courtesy of MAZDA MOTORS CORP.
Front Oil Seal Disassembly Note
1. Remove the oil seal usin
g
a screwdriver.
2007 Mazda MX-5 Miata Sport
2006-08 ENGINE Mechanical - Overhaul - 2.0L (LF) & 2.3L (L3) - Mazda6 & MX-5 Miata
Microsoft
Thursday, July 09, 2009 2:43:25 PM Page 6 © 2005 Mitchell Repair Information Company, LLC.

Fig. 6: Removing Oil Seal
Courtesy of MAZDA MOTORS CORP.
Chain Tensioner Disassembly Note
1. Unlock the chain tensioner ratchet using a suitable screw driver or equivalent tool.
2. Slowly press the tensioner piston.
3. Hold the chain tensioner piston with a 1.5 mm {0.06 in} wire or paper clip.
2007 Mazda MX-5 Miata Sport
2006-08 ENGINE Mechanical - Overhaul - 2.0L (LF) & 2.3L (L3) - Mazda6 & MX-5 Miata
Microsoft
Thursday, July 09, 2009 2:43:25 PM Page 7 © 2005 Mitchell Repair Information Company, LLC.

Fig. 7: Disassembling Chain Tensioner
Courtesy of MAZDA MOTORS CORP.
Oil Pump Sprocket Disassembly Note
1. Hold the oil pump sprocket using the SST .
2007 Mazda MX-5 Miata Sport
2006-08 ENGINE Mechanical - Overhaul - 2.0L (LF) & 2.3L (L3) - Mazda6 & MX-5 Miata
Microsoft
Thursday, July 09, 2009 2:43:25 PM Page 8 © 2005 Mitchell Repair Information Company, LLC.

Fig. 8: Holding Oil Pump Sprocket Using SST
Courtesy of MAZDA MOTORS CORP.
CYLINDER HEAD (I) DISASSEMBLY
1. Disassemble in the order indicated in the table.
2007 Mazda MX-5 Miata Sport
2006-08 ENGINE Mechanical - Overhaul - 2.0L (LF) & 2.3L (L3) - Mazda6 & MX-5 Miata
Microsoft
Thursday, July 09, 2009 2:43:25 PM Page 9 © 2005 Mitchell Repair Information Company, LLC.

Fig. 9: Exploded View Of Cylinder Head (I) Disassembly
Courtesy of MAZDA MOTORS CORP.
Camshaft Sprocket Lock Bolt, Variable Valve Timing Actuator Lock Bolt Disassembly Note
1. Hold the camshaft by using a wrench on the cast hexagon as shown, and loosen the camshaft sprocket
2007 Mazda MX-5 Miata Sport
2006-08 ENGINE Mechanical - Overhaul - 2.0L (LF) & 2.3L (L3) - Mazda6 & MX-5 Miata
Microsoft
Thursday, July 09, 2009 2:43:25 PM Page 10 © 2005 Mitchell Repair Information Company, LLC.