Service of Nissan Almera from 1995 to 2000 in N15 body
1. General information
2. General requirements to car repairs
3. Operation and maintenance of the car
4. Petrol engines
4.1. Removal and installation of the power unit
4.2. Dismantling and assembly of the engine
4.3. Block of cylinders
4.4. Conrod and piston group
4.4.1. Check of technical condition
4.5. Bent shaft and flywheel
4.6. Gas distribution mechanism
4.7. Head of the block of cylinders of GA14DE and GA16DE engines
4.8. Head of the block of cylinders of the SR20DE engine
4.9. Cooling system
4.10. Lubrication system
4.11. System of production of the fulfilled gases
4.12. Power supply system
4.13. Complex Control System of the Engine (CCSE)
5. Diesel engines
6. Transmission
7. Running gear
8. Steering
9. Brake system
10. Electric equipment
11. Body
12. Appendices
13. Schemes of electric equipment



4.4.1. Check of technical condition

Remove piston rings and clear pistons of a deposit. On the surface of pistons there should not be рисок also zadir; otherwise replace pistons. Measure diameter of pistons.

Fig. 2.10. Measurement of diameter (D) piston at distance (d) from the lower end face of a skirt

Diameter of the piston is measured at d distance from the lower end face of a skirt (fig. 2.10) and makes, mm:
for       the GA14DE 7,5 engine
for       the GA16DE 9,5 engine
for       the SR20DE 11 engine
Check a gap between the piston and the cylinder by means of a set of flat probes or a rasschityta a gap by results of measurements of details. Be convinced of absence of damage of hairpins of rods, overheat traces. Check openings of the top and lower heads of a rod. In them there should not be damages.
Check a gap between a piston finger and the plug of the top head of a rod. In case of the raised gap replace a piston finger, the plug of a head of a rod or a rod. When replacing the plug combine its opening for lubricant with an opening in a rod head. Check gaps between piston rings and flutes. At a considerable deviation from the admission measure thickness of piston rings. If necessary replace rings and pistons. Check gaps in locks of rings. At much the increased gap even at new piston rings install pistons of the repair size, pierce cylinders or replace the block of cylinders.

"previous page
4.4. Conrod and piston group
following page"
4.5. Bent shaft and flywheel