Hyundai Santa Cruz: Cylinder Block / Crankshaft
• Use fender covers to avoid damaging painted surfaces.
• Wait until the engine cools down to room temperature to avoid damaging the cylinder head before removing.
• When handling the metal gasket, be careful not to fold or damage the surface of the gasket.
• To avoid damage, disconnect the wiring connectors carefully while holding the connector portion.
• Mark all wirings and hoses to avoid misconnection.
• Turn the crankshaft pulley so that the piston of No.1 cylinder is positioned at the Top Dead Center (TDC).
1.Remove the engine and transaxle assembly from a vehicle.(Refer to Engine and Transmission Assembly - "Engine and Transaxle Assembly")
2.Remove the dual clutch transmission assembly.(Refer to Dual Clutch Transmission System - "Dual Clutch Transmission System")
3.Remove the fly wheel.(Refer to the Cylinder Block - "Fly Wheel")
4.Remove the rear oil seal. (Refer to the Cylinder Block - "Rear Oil Seal")
5.Install the engine to engine stand for disassembly.
6.Remove the cylinder head cover. (Refer to the Cylinder Head Assembly - "Cylinder Head Cover")
7.Remove the oil pan.(Refer to the Lubrication System - "Oil Pan")
8.Remove the timing chain cover.(Refer to the Timing System - “Timing Chain Cover”)
9.Remove the timing chain.(Refer to the Timing System - “Timing Chain”)
10.Remove the integrated thermal management module (ITM).(Refer to the Cooling System - "Integrated Thermal Management Module (ITM)")
11.Remove the intake/exhaust/CVVT and camshaft assembly.(Refer to the Cylinder Head Assembly - "CVVT & Camshaft")
12.Remove the intake manifold.(Refer to the Intake And Exhaust System - "Intake Manifold")
13.Remove the turbocharger & exhaust manifold.(Refer to the Intake And Exhaust System - "Turbocharger & Exhaust Manifold")
14.Remove the cylinder head.(Refer to the Cylinder Head Assembly - "Cylinder Head")
15.Remove the oil pump.(Refer to the Lubrication System - "Oil Pump")
16.Remove the balance shaft assembly.(Refer to the Lubrication System - "Balance Shaft Assembly Module")
17.Remove the water pump.(Refer to the Cooling System - "Water Pump")
18.Remove the alternator.(Refer to the Engine Electrical System - "Alternator")
19.Remove the oil filter & oil cooler.(Refer to the Lubrication System - "Oil Filter & Oil Cooler")
20.Remove the lower crankcase.
(1)Loosen the lower crankcase mounting bolts.
(2)Loosen the crankshaft bearing cap bolts.
(3)Remove the lower crankcase (A).
21.Remove the piston and connecting rod assembly.(Refer to the Cylinder Block - "Piston and Connecting Rod")
22.Remove the crankshaft (A) from the cylinder block. At this time, be careful not to damage the crankshaft journals.
• Arrange the main bearings and thrust bearings in regular sequence.
23.Remove the crankshaft position sensor wheel (A).
1.Measure the oil clearance of crankshaft bearing.
(1)Clean each main journal and bearing with a cloth, etc.
(2)Place a piece of plastic gauge in the axial direction of each main journal.
(3)Refit the bearing and bearing cap and then tighten to the specified torque.
Tightening torque : Lower crank case mounting bolts : 29.4 - 33.3 N.m (3.0 - 3.4 kgf.m, 21.6 - 25.9 lb-ft)Bearing cap mounting bolts : [27.5 - 31.4 N.m (2.8 - 3.2 kgf.m, 20.3 - 23.1 lb-ft)] + [150 - 155°]
[Lower crank case mounting bolt]
• Do not turn the crankshaft.
(4)Remove the lower crankcase and then measure the widest part of the plastic gauge.
Crankshaft bearing oil clearance :#1, 2, 4, 5 : 0.022 - 0.040 mm (0.00087 - 0.00157 in.)#3 : 0.028 - 0.046 mm (0.00110 - 0.00181 in.)
(5)If the measured value of the plastic gauge is out of the specified value, replace bearing with a new one having the same classification color and then remeasure the oil clearance. (Refer to the crankshaft bearing selection table)
• Do not adjust the clearance by machining the bearing or cap.
(6)If the remeasured value is still out the specified value, install the next larger or smaller bearing and then remeasure the oil clearance. (Refer to the crankshaft bearing selection table)
• If the proper clearance cannot be obtained by using the appropriate larger or smaller bearings, replace the crankshaft and start over.
The each size mark of the 5 main journal bores is engraved on the side of cylinder block. Use the journal bore inner diameter mark engraved on the cylinder block and the journal outer diameter mark engraved on the crankshaft for correct bearing selection.
• Classification of location should be followed in engraved order.#1 → #5 (Crank bore)
| Class | Mark | Cylinder block crankshaft journal bore inner diameter |
| a | A | 57.000 - 57.006 mm (2.2441 - 2.2443 in.) |
| b | B | 57.006 - 57.012 mm (2.2443 - 2.2446 in.) |
| c | C | 57.012 - 57.018 mm (2.2446 - 2.2448 in.) |
| Class | Mark | Class Mark Crankshaft main journal outer diameter |
| I | 1 | 51.954 - 51.960 mm (2.0454 - 2.0457 in.) |
| II | 2 | 51.948 - 51.954 mm (2.0452 - 2.0454 in.) |
| III | 3 | 51.942 - 51.948 mm (2.0450 - 2.0452 in.) |
| Class | Color | Bearing thickness |
| A | Sky Blue | 2.518 - 2.521mm (0.0991 - 0.0993in.) |
| B | Black | 2.515 - 2.518mm (0.0990 - 0.0991in.) |
| C | White | 2.512 - 2.515mm (0.0989 - 0.0990in.) |
| D | Light Green | 2.509 - 2.512mm (0.0988 - 0.0989in.) |
| E | Pink | 2.506 - 2.509 mm (0.0987 - 0.0988 in.) |
| F | Yellow | 2.503 - 2.506 mm (0.0985 - 0.0987 in.) |
(7)Select the proper crankshaft main bearing using the below bearing selection table.
| Classification mark for main journal bore | ||||
| a (A) | b (B) | c (C) | ||
| Classification mark for crankshaft main journal | I (1) | E (Pink) | D (Light Green) | C (White) |
| II (2) | D (Light Green) | C (White) | B (Black) | |
| III (3) | C (White) | B (Black) | A (Sky Blue) | |
| Classification mark for main journal bore | ||||
| a (A) | b (B) | c (C) | ||
| Classification mark for crankshaft main journal | I (1) | F (Yellow) | E (Pink) | D (Light Green) |
| II (2) | E (Pink) | D (Light Green) | C (White) | |
| III (3) | D (Light Green) | C (White) | B (Black) | |
2.Measure the crankshaft end play.Check the axial clearance by moving the crankshaft back and forth using a dial gauge.
Crankshaft end play : 0.100 - 0.280 mm (0.0039 - 0.0110 in.)
Thrust bearing thickness : 2.41 - 2.45 mm (0.09488 - 0.09646 in.)
3.Check the crankshaft main journals and pin journals.Use a micrometer to measure the outer diameter of the crankshaft main journals and pin journals.
Main journal diameter :51.942 - 51.960 mm (2.0450 - 2.0457 in.)Crank pin diameter :47.954 - 47.972 mm (1.8879 - 1.8887 in.)
• Clean the each part before assembling.
• Apply new engine oil on the sliding/rotating area before assembling parts.
• Always use the new gasket, O-ring and oil seal.
1.Install the main bearing.
• Install the crankshaft upper bearing which fits to each journal.[#2, 3, 4 journal bearing]
(1)Install the 5 upper bearings (A) by aligning the cylinder block groove and the bearing protrusion.
(2)Install the 5 lower bearings (A) by aligning the crank lower case groove and the bearing protrusion.
(3)Apply engine oil after assembling the main bearings.
2.Install the thrust bearings.Install the 2 thrust bearings (A) under the cylinder block No. 4 journal, with the oil groove facing outward.
3.Install the crankshaft position sensor wheel (A).
Tightening torque :26.4 - 27.4 N.m (2.7 - 2.8 kgf.m, 19.52 - 20.25 lb-ft)
4.Install the crankshaft (A) to the cylinder block.
5.Install the lower crankcase.
(1)Be sure to remove the hardening sealant, foreign substance, oil, dust or moisture remaining on the liquid gasket sealing surface of the lower crankcase.Spray cleaner on the sealing surface and then wipe off with a clean towel.
(2)Install the new O-ring (A) to the cylinder block.
(3)Apply liquid gasket to the lower crankcase mounting surface and then assemble within 5 minutes.
Bead width : Ø 2.5 - 3.5 mm (0.09843 - 0.13780 in.)Sealant : Loctite 5900H / Threebond 1217H or equivalent
(4)Tighten the crankshaft bearing cap bolts in several passes in the below sequence.
Tightening torque : 27.5 - 31.4 N.m (2.8 - 3.2 kgf.m, 20.3 - 23.1 lb-ft) + [150 - 155°]
• Always use the new bearing cap bolt.
(5)Tighten the lower crankcase mounting bolts in several passes in the below sequence.
Tightening torque : [27.5 - 31.4 N.m (2.8 - 3.2 kgf.m, 20.3 - 23.1 lb-ft)] + [150 - 155°]
(6)Check if the crankshaft rotates smoothly.
6.Check the crankshaft end play.
7.Install the piston and connecting rod assembly. (Refer to the Cylinder Block - "Piston And Connecting Rod")
8.Install in the reverse order of removal.
• When replacing the crankshaft, select and install the appropriate connecting rod bearing according to the pin journal mark on the crankshaft.
• Connecting rod bearing selection(Refer to the Cylinder Block - "Piston And Connecting Rod")
Piston and Connecting Rod
- Disassembly
• Use fender covers to avoid damaging painted surfaces.
• Wait until the engine cools down to room temperature to avoid damaging the cylinder head before r ...
Cylinder Block
- Disassembly
• Use fender covers to avoid damaging painted surfaces.
• Wait until the engine cools down to room temperature to avoid damaging the cylinder head before r ...
Other information:
Hyundai Santa Cruz (NX4A OB) 2021-2025 Service Manual: Fuel Pressure Test
- Fuel Pressure Test
1.Release the residual pressure in fuel line.(Refer to Delivery System - "Release Residual Pressure in Fuel Line")
• When removing the fuel pump fuse, a Diagnostic Trouble Code
(DTC) may occur. Delete the code with the diagnostic tool after
completion ...
Hyundai Santa Cruz (NX4A OB) 2021-2025 Service Manual: Door Garnish
- Replacement
• When removing with a flat-tip screwdriver or remover, wrap protective tape around the tools to prevent damage to components.
• Put on gloves to prevent hand injuries.
1.Loosen the mounting nuts, remove the front door garnish (A) and rear door garnish ...
