Shiva, a World Championships bronze-medallist and a two- time medallist at the Asian meet, edged past Kyrgyzstan's Omurbek Malabekov in a split verdict to make the last-eight stage.
Shiva will face Chinese Taipei's Chu-En Lai in the quarterfinals tomorrow.
Manoj fought it out against Afghanistan's Allah Dad Rahimi and emerged triumphant without much of a hassle.
Awaiting the former Commonwealth Games gold-medallist in the quarterfinals is Mongolia's Tuvshinbat Byamba.
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Sumit defeated Mongolia's Erdenebayar Sandagsuren in his last-16 bout late last night. Up ahead for the Haryana- pugilist is third-seeded Chinese Fengkai Yu.
Manish, on the other hand, defeated Sri Lanka's GR Gunarathna in his prequarterfinal bout. Manish's win was a unanimous verdict.
In the evening session, Kavinder took on Indonesia's Aldoms Suguro and prevailed comfortably in a unanimous verdict.
Kavinder, a National Championships quarterfinalist, will be squaring off against local favourite Jasurbek Latipov in the quarterfinals.
Both the boxers played the waiting game for a major part of the contest but the former Asian champion from India was a shade ahead of his rival in capitalising on the opportunities he got.
Omurbek, despite his long reach, struggled to connect cleanly and even ended up sustaining a cut above his left eye.
Manoj's but was devoid of any drama and the Indian went about dismantling his lesser-fancied rival with utmost ease. Rahimi's attacks lacked both creativity and power and Manoj had no trouble emerging as the clear winner.
The tournament, featuring 179 boxers from 28 countries, is a qualifier for the August-September World Championships in Hamburg, Germany.
The top-six in each of the 10 weight categories in this tournament will make the cut for the marquee event.
India had won four medals at the last Asian Championships in 2015. Vikas had won the country its lone silver medal, while Shiva, L Devendro Singh (52kg) and Satish (+91kg) had settled for bronze medals.
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