Perkins — Perkins Diesel Engine Workshop Manual (EN)

TECHNICAL DATA-B.4 Piston Rings 4.108 Top-Compression Second and Third Compression Fourth-Oil Control Fifth-Oil Control Top Compression Ring Width Ring Clearance in Grove ... Second and Third Compression Ring Width Ring Clearance in Groove Fifth Scraper Ring Width ... Ring Clearance in Groove Ring Gap-Top Compression Ring Gap-Second and Third Compression . Ring Gap-Fifth Scraper ...

Parallel Faced Internally Stepped Laminated Segment '* Slotted Scraper 0.0771/0.0781 in (1,958/1,984 mm) 0.0024/0.0044 in (0,061/0,112 mm) 0.0615/0.0625 in (1,562/1,587 mm) 0.00210.004 in (0,051/0,102 mm) 0.1865/0.1875 in (4,737/4,762 mm) 0.0025/0.0045 in (0,063/0,114 mm) 0.00910.017 in (0,229/0,432 mm) 0.00910.017 in (0,229/0,432 mm) 0.00910.017 in (0,229/0,432 mm) :* Engines rated at 3,000 revlmin and below have a slotted scraper fitted in the fourth groove which has the same I width, clearance and gap as the fifth ring. :

Piston Rings 4.108(Controlied Expansion - Four Ring) , Top Compression I Second and Third Compression Chrome Insert - Parallel Faced Internally Stepped Spring Loaded Scraper 0.077/0.078 in (1,96/1,98 mm) 0.002/0.005 in (0,05/0,13 mm) 0.0615/0.0625 in (1,5611,59 mm) 0.0015/0.0035 in (0,0410,09 mm) 0.186/0.1865 in (4,72/4,74 mm) 0.0022/0.0035 in (0,0510.09 mm) 0.012/0.023 in (0,30/0,58 mm) 0.009/0.020 in (0,23/0,50 mm) 0.010/0.021 in (0,25/0,53 mm) I Fourth Oil Control I Top Compression Ring Width I Ring Clearance in Groove ... : Second and Third Compression Ring Width Ring Clearance in Groove I Oil Control Ring Width ... I Ring Clearance in Groove J Ring Gap, Top ... . ..

I Ring Gap, Second and Third I Ring Gap, Oil Control : Piston Rings 4.108 (Controlled Expansion - Three Ring) I Top Compression : Second Compression I Third Oil Control Chrome, Taper Faced Internally Stepped, Taper Faced Spring Loaded Scraper 0.0765/0.0775 in (1,943/1,969 mm) 0.0025/0.0055 in (0,063/0,140 mm) 0.097/0.098 in (2,46/2,49 mm) 0.0015/0.0035 in (0,039/0,089 mm) 0.1865/0.1875 in (4,737/4,763 mm) 0.0015/0.0035 in (0,039/0,089 mm 0.01210.023 in (0,31/0,59 mm) 0.009/0.020 in (0,23/0,51 mm 0.012/0.023 in (0,31/0,59 mm I Top Compression Ring Width I Clearance in Groove ... : Second Compression Ring Width I Clearance in Groove I Oil Control Ring Width :

Clearance in Groove I Ring Gap, Top ... I Ring Gap, Second I Ring Gap, Oil Control Piston Rings 4.99 Vehicle Top Compression Second and Third Compression Fourth and Fifth Oil Control Parallel Faced Chrome Plated Internally Stepped Slotted Scraper Piston Rings 4.107 and 4.99 and Industrial Top Compression 'Second and Third Compression Fourth-Oil Control Fifth-Oil Control Parellel Cast Iron Internally Stepped Chrome Plated Spring Loaded Scraper Slotted Scraper Top Compression Ring Width Ring Clearance in Groove Second and Third Compression Ring Width.

Ring Clearance in Groove Fourth and Fifth Scraper Ring Width Ring Clearance in Groove Ring Gap-Compression Rings Chrome Vehicle Ring Gap-Oil Control Rings Cast Iron Vehicle Ring Gap-Compression Rings Cast Iron Agricultural and Industrial 4.99 Agricultural engines have taper faced cast iron compression rings fitted in the second and third ring grooves. 0.0771/0.0781 in (1,96/1,984 mm) 0.002/0.004 in (0,051/0,102 mm) 0.0615/0.0625 in (1,562/1,587 mm) 0.00210.004 in (0,051/0,102 mm) 0.1865/0.1875 in (4,73714,762 mm) 0.0025/0.0045 in (0,064/0.114 mm) 0.01210.020 in (0,30/0,50 mm) 0.009/0.017 in (0,30/0,432 mm) 0.009/0.017 in (0,30/0,432 mm)